Where the Particulate

Where the Particulate Collection Equipment is exhausting inside the building, HEPA filtration with
99.97% collection efficiency for 0.3-micron size (or greater) particles shall be used. When the
Particulate Collection Equipment is exhausting outside the building, Mechanical Cleaning

operations might

operations might be attempted just with Particulate Collection Equipment set up, including

satisfactory filtration to contain Debris expelled from the HVAC framework. At the point when the Particulate

Accumulation Equipment is debilitating outside the building, safety measures might be taken to place the

gear down wind and far from all air admissions and different purposes of passage into the building.

Where the

Where the Particulate Collection Equipment is debilitating inside the building, HEPA filtration with

99.97% accumulation productivity for 0.3-micron size (or more prominent) particles might be utilized. At the point when the

Particulate Collection Equipment is depleting outside the building, Mechanical Cleaning

ventilation work. In HVAC frameworks that incorporate different air taking care of units, an agent specimen of

ventilation work. In HVAC frameworks that incorporate different air taking care of units, an agent specimen of

the units ought to be investigated.

(B) The cleanliness investigation should be led without contrarily affecting the indoor

environment through unreasonable disturbance of settled dust, microbial enhancement or different trash.

In situations where tainting is suspected, and/or in delicate situations where even little

Regulation

Regulation

Garbage evacuated amid cleaning should be gathered and insurances must be taken to guarantee that

Garbage is not generally scattered outside the HVAC framework amid the cleaning methodology.

(B) Particulate Collection

2 HVAC SYSTEM INSPECTION AND SITE PREPARATIONS

2 HVAC SYSTEM INSPECTION AND SITE PREPARATIONS

(A) HVAC System Component Inspections

Preceding the beginning of any cleaning work, the HVAC framework cleaning foreman might

perform a visual investigation of the HVAC framework to focus proper strategies, instruments, and

supplies needed to attractively finish this undertaking. The cleanliness investigation ought to

incorporate air taking care of units and delegate regions of the HVAC framework parts and

inner part

inner part surfaces of the AHU, blending box, curl compartment, condensate channel dish, supply air

pipes, fans, fan lodging, fan edges, turning vanes, channels, channel lodgings, warm loops, and supply

diffusers are all viewed as a major aspect of the HVAC framework. The HVAC framework might likewise incorporate other

segments, for example, devoted fumes and ventilation parts and make-up air frameworks.

The Kitchen Hood Exhaust frameworks are excluded in the extent of work.

NR & R APPENDICES –

NR & R APPENDICES – NA7.5.15 (Functional Tests) The following shall be added to the NR Compliance Manual in the NA7 section NA7.5.15 Kitchen Exhaust Systems with Type I Hood Systems The following acceptance tests apply to commercial kitchen exhaust systems with Type I exhaust hoods.  All Type I exhaust hoods used in commercial kitchens shall be tested. NA7.5.15.1 Kitchen Exhaust Construction Inspection 1. Verify exhaust and replacement air systems are installed, power is installed and control systems such as demand control ventilation are calibrated 2. For kitchen/dining facilities having total Type 1 and Type II kitchen hood exhaust airflow rates greater than 5,000 cfm, calculate the maximum allowable exhaust rate for each Type 1 hood per Table 144-

The following

The following acceptance test applies to systems with and without demand control ventilation exhaust systems. 1. Operate all sources of outdoor air providing replacement air for the hoods 2. Operate all sources of recirculated air providing conditioning for the space in which the hoods are located 3. Operate all appliances under the hoods at operating temperatures 4. Verify that the thermal plume and smoke is completely captured and contained within each hood at full load conditions by observing smoke or steam produced by actual cooking operation and/or by visually seeding the thermal plume using devices such as smoke candles or smoke puffers.  Smoke bombs shall not be used (note: smoke bombs typically create a large volume of effluent from a point source and do not necessarily confirm whether the cooking effluent is being captured). For some appliances (e.g., broilers, griddles, fryers), actual cooking at the norm

production

production rate is a reliable method of generating smoke). Other appliances that typically generate hot moist air without smoke (e.g., ovens, steamers) need seeding of the thermal plume with artificial smoke to verify capture and containment. 5. Verify that space pressurization is appropriate (e.g. kitchen is slightly negative relative to adjacent spaces and all doors open/close properly). 6. Verify that each Type 1 hood has an exhaust rate that is below the maximum allowed. 7. Make adjustments as necessary until full capture and containment and adequate space pressurization are achieved and maximum allowable exhaust rates are not exceeded.  Adjustments may include: a. adjust exhaust hood airflow rates  b. add hood side panels c. Add rear seal (back plate) d. Increase hood overhang by pushing equipment back e. Relocate supply outlets to improve the capture and containment performance  8. Measure and record final exhaust airflow rate per Type 1 hood.

Functional Testing

NA7.5.15.2.2 Functional Testing - Exhaust Systems with Demand Control Ventilation The following additional acceptance test shall be performed on all hoods with demand control ventilation exhaust systems. 1. Turn off all kitchen hoods, makeup air and transfer systems 2. Turn on one of the appliances on the line and bring to operating temperature. Confirm that: a. DCV system automatically switches from off to the minimum flow setpoint. b. The minimum flow setpoint does not exceed the larger of i. 50% of the design flow, or  ii. the ventilation rate required per Section 121. c. The makeup air and transfer air system flow rates modulate as appropriate to match the exhaust rate d. Appropriate space pressurization is maintained. 3. Operate all appliances at typical conditions. Apply sample cooking products and/or utilize smoke puffers as appropriate.  Confirm that: a. DCV system automatically ramps to full speed. b. Hood maintains full capture and containment during ramping to and at full-speed c. Appropriate space pressurization is maintained.

Nonresidential ACM

6.5 Nonresidential ACM Manual Kitchen Space Type: In order for compliance software to analyze this and other kitchen related measures, kitchens shall be modeled as separate space types apart from other building occupancy types and be assigned lighting, plug load, and people densities. Internal load shall use the following:  Lighting: 1.6 watts per square foot  Plug Load: 10 watts per square foot  Occupants: 100 square feet per occupant  Schedules: Use Table N2-8-Nonresidential Occpancy Schedules(Other than Retail) User Input: 1. Values for all Type I and Type II exhaust hoods in the modeled kitchen. a. CFM values for all hoods b. For Type I hoods ONLY i. Hood Length ii. Hood Style (Canopy, Wall Mount, etc.) iii. Hood Cooking Duty (Highest duty appliance under hood)

The Standard Baseline Model:

The Standard Baseline Model: 1. Total kitchen exhaust shall be either: a) If the total exhaust is less than 5,000 cfm, the user entered total exhaust rate. b) If the total exhaust rate is greater than or equal to 5,000 cfm, a total exhaust rate that is the sum of the Type I hoods based on the user input data and less than or equal to the maximum net exhaust flow rate in Table 144-C. c) Hood exhaust total static pressure shall be 2.5” and the fan efficiency shall be 50%. 2. Conditioning Systems a. The Cooling Load and Cooling CFM for the kitchen are calculated using a Cooling Space Setpoint of 80°F and a Cooling Supply Air temperature setpoint of 60°F.     b. The standard model shall use a 100% outside air direct evaporative system if the space temperature exceeds 80oF less than 10 hour per year, i.e. the compliance software will have to first run direct evaporative and then run DX if direct evaporative cannot meet the comfort criteria. i. Direct evaporative system assumptions: 1. 90% direct evaporative effectiveness 2. 1.5” total fan static, 60% fan efficiency 3. 100% outside airflow equal to the total kitchen exhaust c. If the standard model cannot meet the direct evaporative criteria, the system shall be modeled as System 1 or 2 except as noted herein: i. The standard model shall model the makeup air unit as a 100% outside air packaged unit ii. Supply cfm shall use the larger of the Cooling CFM or the Total Exhaust minus the Available Transfer. iii. Total fan static for the packaged unit shall be 2.0” , fan efficiency shall be 50

CANOPY & SUPPRESSION ELMHURST SCHOOL

CANOPY & SUPPRESSION ELMHURST SCHOOL
We liaised with both the consultant, Fowler Martin, and the contractor, AC Preou at all times during the installation of this Induction Island Canopy.
The system featureed an Ansul R-102 Fire Suppression system, fully recessed grease- proof lights and a Medem Control Interlock system.
KITCHEN VENTILATION HALLSVILLE PRIMARY SCHOOL
Our track record of successful and efficient projects was demonstrated by this 'Canvent' island kitchen canopy installation for the London Borough Council of Newham.
The 4100 x 2200 x 600 deep island kitchen canopy was fitted with grease proof, recessed lights, stainless steel grease filters and a R102 Ansul fire suppression system.
WALL MOUTED SYSTEM TIVIDALE SCHOOL
We worked closely with Sandwell MBC to complete this installation of a kitchen ventilation system, complete with control solution that featured a thyristor, speed regulators and gas interlock.
The existing canopy was removed and a stainless steel wall mounted extraction canopy was designed and installed in it's place, with a provision for make-up air

Loft venting

Loft venting is an essential piece of a home's dampness and hotness administration framework. Upper room ventilation is typically uninvolved in nature and depends on convective air flow–intake and debilitate. Cooler air is attracted through the lower vents, then moves along the overhang, then climbs to the highest point of the upper room where it passes out through the upper vents. By venting dampness and high temperature, this methodology permits a home to be more vitality proficient. It helps safeguard the trustworthiness of a home's building parts, making it more tough, and reducing the requirement for exorbitant repairs. It likewise aides keep the development of hurtful molds and forms that can harm human wellbeing.

Numerous property

Numerous property holders are joyfully unconscious of whether the loft venting in their house is sufficient, whether the ventilation structures are legitimately put, or whether the venting is proper to the home's building design. Yet, the essentialness of storage room ventilation can't be exaggerated.

At Energy Efficiency First, as experts applying the standards of building science, we normally teach our customers about the routes in which their homes function as a framework. It is our occupation to comprehend the results, planned or unintended, that changing one piece of a home can have on different parts or territories of the home.

Generally speaking

Generally speaking, more attic ventilation is better than less, especially if the home’s building envelope at the thermal boundary is well air sealed so that any excess attic ventilation is not able to draw conditioned air from the home’s living space. When we see a home with a problem related to attic ventilation, it is usually from too little. We have found structures built without the building code’s minimum ventilation requirements. We have also found attics where a home improvement project was done in a manner that blocked, and choked off, the otherwise adequate lower ventilation structures.

Attic venting

Attic venting is a crucial part of a home’s moisture and heat management system. Attic ventilation is usually passive in nature and relies on convective air flow–intake and exhaust. Cooler air is drawn in through the lower vents, then moves along the eaves, then rises to the top of the attic where it passes out through the upper vents. By venting moisture and heat, this process allows a home to be more energy efficient. It helps preserve the integrity of a home’s building components, making it more durable, and lessening the need for costly repairs. It also helps prevent the growth of harmful mildews and molds that can damage human health.

There are two components

There are two components in a fundamental ventilation framework:

A fan to concentrate stale air. Pick-up focuses for stale air are by and large in high dampness ranges, for example, the kitchen, utility and bathrooms.

The make-up air supply. Outside air is conveyed around the house, with one supply point in every room and no less than one in the living region. The suction made by the fumes fan pulls air through the house from supply indicates the pick-up focuses. By appropriately spotting the pick-up and supply focuses, outside air will go all through the whole house.

Cleaning Indoor Air: Pet Allergies

Cleaning Indoor Air: Pet Allergies

If you have pets that you love, but you also have pet allergies, there are some ways to improve the air you breathe. “Keep the pet outside or at the very least outside of your bedroom,” Calhoun says. “Just reducing the allergen burden in the bedroom will likely have some benefit because we spend eight hours in the bedroom a night.”

Bathing your pet regularly can also reduce allergen burden, according to Calhoun

Introducing ventilation

Introducing ventilation will dispose of abundance dampness.

Kitchen, lavatory and storm cellar fumes fans are a decent starting for those particular inconvenience spots, giving spot ventilation to oust dampness and smells from constrained territories. With spot ventilation, you can physically flip a switch and tackle the issue.

A ventilation framework

A ventilation framework will keep up general indoor-air quality. A fundamental ventilation framework ousts stale air (containing water vapor, carbon dioxide, airborne chemicals and different toxins), attracts outside air (containing less poisons and less water vapor), and circulates outside air all through the house.

Many homeowners

Many homeowners are blissfully unaware of whether the attic venting in their home is sufficient, whether the ventilation structures are properly placed, or whether the venting is appropriate to the home’s architecture. Yet, the importance of attic ventilation cannot be overstated.

At Energy Efficiency First, as professionals applying the principles of building science, we commonly educate our clients about the ways in which their homes work as a system. It is our job to understand the consequences, intended or unintended, that changing one part of a home can have on other components or areas of the home.

Particles in the Air

Particles in the Air

Cleaning regularly is a good way to keep your indoor air irritant-free, right? Wrong! It can actually make things worse unless you choose your cleaning products wisely.

Some cleaning products, including those with chlorine and ammonia, contain volatile organic compounds (VOCs). Some paints, shellacs, and floor polishes may also contain VOCs. The compounds then go into the air as gases.

You can cut down on VOCs by choosing products that say "low VOC" or "no VOC" or buying fragrance-free cleaners. Harold S. Nelson, MD, professor of medicine at National Jewish Health in Denver, advises considering liquids or pastes instead of sprays for cleaning because they disperse fewer particles into the air.

VOCs aren't the only particles affecting air quality. Mold spores that start off in a damp basement can float up into the rest of the house. "Areas of leakage and dampness should be addressed throughout the house,” Nelson says.

Indoor Air Pollution: Irritating Gasses

Indoor Air Pollution: Irritating Gasses

Do you cook with a natural gas or propane stove? ”Get the gas jets cleaned and serviced annually by a technician who can adjust the metering so that the gas burns cleanly,” Calhoun says. This is important for all gas-run appliances.

“In the kitchen, the stove emits nitrogen dioxide, one of the most irritating gases, and when combined with sunlight, produces ozone,” says Schachter. “This gas is so irritating that at higher levels can cause wheezing in people who don't have asthma."

Simple solution? If you have a gas stove, keep the kitchen window open a bit or turn on the fan hood to avoid nitrogen dioxide buildup, he suggests.

Step 2: Turn on the AC

Step 2: Turn on the AC. Use an air conditioner in the summer, Schachter says. “Many pollutants are water-soluble, and as air conditioners remove water from the atmosphere, they remove these pollutants,” he tells WebMD. “Air conditioners also remove pollen and particulate matter.”

Step 3: Install a HEPA (high-efficiency particulate air) filter. You can make the air conditioner even more effective with a disposable HEPA filter, says Schachter.

Stand-alone HEPA air cleaners are another option for cleaning the air in a single room. If they use a fan to draw in the air, they can be noisy, however.

It’s less clear how effective electronic air cleaners are since there is no standard measurement for their effectiveness. Also, electronic cleaners may not be effective at removing large air particles, according to the Environmental Protection Agency.

Space heaters

Space heaters, ranges, ovens, stoves, furnaces, fireplaces, and water heaters "release gases and particulates into the air,” Calhoun adds. “There is also the fairly intense burden of allergens with indoor air quality such as pets, house dust mites. And perennial (year-long) allergens are 10- to 100-fold higher indoors than out.”

Bad air can trigger coughing, chest tightness, sore throat, watery or itchy eyes, shortness of breath, and even a full-blown asthma attack. “If you live in a home with chronically poor air quality, you can experience frequent headaches, long lasting colds, and bronchitis as well as chronic asthma,” says E. Neil Schachter, MD, the medical director of respiratory care at Mount Sinai Medical Center in New York.

potential sources

There are potential sources of air pollution in just about every room of your house, but don’t despair. The good news is that there are easy, and affordable, solutions for most of them.

What could be polluting the air in your home? The pollutants that lurk outdoors can be found indoors as well, where they can and do join forces with other irritants. Those can include fumes from combustion devices and gas-fired appliances, not to mention allergens such as pet dander, house dust mites, and mold, Calhoun says.

bad air day

You may be having a bad air day every day -- and we are not talking about outdoor air. The indoor air quality in your home may be affecting your health and the health of your family members.

"Indoor air quality can be worse than outdoor air quality in almost every case,” says William J. Calhoun, MD, professor of medicine and vice chair of the department of medicine at the University of Texas Medical Branch in Galveston.

Keeping cool in summer

Keeping cool in summer

Keeping a house cool in summer is also an important consideration. Measures to control overheating include:

• Controlling heat from the sun by reducing window areas or using tinted or reflective glazing, and shading.
• Increasing ventilation – cross-flow ventilation, extractor fans and ceiling fans and passive vents.
• Increasing insulation, especially in roofs.

3 Steps to Better Indoor Air Quality

3 Steps to Better Indoor Air Quality

Step 1: Increase ventilation in your house. “We tend to keep our windows tightly shut in the winter, but flinging open a window is not the answer,” says Schachter. “Outdoor air contains by-products of gas emissions from cars and trucks, industrial pollution, as well as dirt and mold.”

Best solution? “Use trickle ventilation, which is a 10-inch high screen with extra filters,” he says. “It adjusts to most windows and allows fresh air in, helps escort indoor pollutants out.”

Air conditioning and heat pumps

Air conditioning and heat pumps

Air conditioning, or cooling with heat pumps uses significant amounts of electricity and requires the home to be closed off from the outside environment to work best.

It dries the internal air and can harbour and spread bacteria if not maintained.

If passive design principles are followed and some supplementary cooling is still required, other options such as fans are much more cost effective than air-conditioning. Even if you  heat pump is very energy efficient, you will find your power bills going up if you use it for summer cooling.