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Topic: Heat recovery ventilation

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	Heat Recovery Ventilation, Office Air Conditioning from Chillaire Ltd in the Midlands (Site not responding. Last check: 2007-11-03)
		Heat recovery ventilation systems are the best systems for ventilation as the outgoing air is used to warm the incoming fresh air, through the air conditioning units and close control air conditioning, so there is minimal cost involved in conditioning the fresh air.
		Heat recovery ventilation systems are the best systems for ventilation as the outgoing air is used to warm the incoming fresh air, so there is minimal cost involved in conditioning the fresh air.
		The heat recovery system is the most cost effective form of ventilation giving you major savings by reclaiming up to 60 percent of the already conditioned warm or cool air in any environment.
	www.chillaire.co.uk /heatrecoverysystems.htm (538 words)

	Construct Ireland -:- Temple Media
		Heat recovery ventilation, a technology that has become a standard building application in Scandinavian countries, is rapidly gaining recognition in Ireland as a solution to both problems.
		Heat Recovery Ventilation is a technology that, whilst having been in existence for some time, is now rapidly gaining recognition in Ireland as an extremely efficient, health-beneficial, cost effective solution to saving energy.
		In contrast to conventional ventilation systems, a HRV is well advanced to offer year round comfort in the building, as while also drawing fresh air in it serves the dual purpose of keeping the living areas at a warm, constant temperature.
	www.constructireland.ie /articles/0204hrv.php (1319 words)

	Simple Energy Recovery - Vent-Axia (Site not responding. Last check: 2007-11-03)
		Secondly, the heat energy (up to 75%) of the extracted air that otherwise could be wasted is transferred to the incoming air.
		Controlled heat recovery meets the demands of today’s life style, and sets the trend for the future of ventilation.
		The alternative to controlled heat recovery ventilation is known as passive stack ventilation.
	www.vent-axia.com /sharing/recovery.asp (686 words)

	Heat Recovery Ventilation
		The wide range of Regavent air handling units for heat recovery ventilation applications allows the correctly sized unit to be selected for almost all domestic situations.
		The new unit incorporates a counter flow heat exchanger to recover up to 95% of the heat from the extracted stale air.
		Units are available with capacities from 250 m3/h to 650 m3/h having AC or DC motors and heat recovery up to 95%.
	www.rega-uk.com /product/hrv.htm (404 words)

	Heat Recovery Ventilators
		A heat recovery ventilator (HRV) brings in fresh air from the outside, preheats the incoming air during the winter and precools the incoming air during the summer.
		The heart of an air-to-air HRV system is the heat recovery ventilation unit which houses the heat exchange core.
		Heat recovery ventilators have long been popular in Canada and are becoming popular in the USA.
	healthandenergy.com /heat_recovery_ventilators.htm (1147 words)

	Building America Industrialized Housing Partnership (Site not responding. Last check: 2007-11-03)
		Heating ventilation and air-conditioning (HVAC) measurements, envelope and duct leakage tests were conducted and remote monitoring equipment installed to track the performance of each home over a three year period.
		The 104 l/s (220 ft 3/min) delivered from the HRV is ducted 9 meters (30 ft) using 20 centimeter (8 in) diameter flexible plastic duct located under the attic foam insulation to a ceiling grill in the bedroom hallway at the other end of the home from the HRV return.
		The manufacturer reports that 85 percent of the heat generated from the motor is transferred to the incoming air downstream of the heat exchanger core with the remaining 15 percent transferred to the exhaust air downstream of the core.
	www.fsec.ucf.edu /bldg/baihp/PUBS/heatrecovery (3372 words)

	Heat recovery ventilation system from eco heat carlow
		The AERO 300 comfort ventilation device is a compact device ready to be plugged in.
		The heat from the used air is recovered via a heat exchanger and led back to the fresh air.
		The clean fresh air then emerges from the device in the form of feed air and is fed to the bed rooms and living rooms via an air distribution system.
	www.ecoheat.ie /recovery (129 words)

	How a Heat Recovery Ventilator Works
		At the core of an HRV is the heat transfer module.
		Typically, an HRV is able to recover 70 to 80 percent of the heat from the exhaust air and transfer it to the incoming air.
		For homes that don’t have forced-air heating – the HRV is connected to a specially installed network of small-diameter fresh-air ducts.
	oee.nrcan.gc.ca /residential/personal/new-homes/r-2000/standard/how-hrv-works.cfm?attr=4 (300 words)

	Field Survey of Heat Recovery Ventilation Systems (Canada Mortgage and Housing Corporation)
		Given the increased reliance on HRVs for ventilation, this research project was undertaken to determine the extent of homeowner knowledge and the extent of problems related to lack of maintenance and adjustment.
		Most occupants understood the general purpose of their HRV; however, comprehension of the technical aspects required to use and maintain the HRV system properly was low, despite more than half having had the operation explained to them and most having been provided an operation manual (only 32% reported that they had read their manual).
		Of the 77% of occupants who reported they understood their HRV systems, 55% had unbalanced systems, 60% had substandard ventilation and 55% of occupants with partially ducted or simplified systems were not aware of the need to operate the fan of the forced air heating system.
	www.cmhc-schl.gc.ca /publications/en/rh-pr/tech/96215.htm (2040 words)

	Scandinavian Homes; Ventilation systems
		The ventilation arrangements must have some surplus capacity and be "forgiving" in its operation, at the same time as it is simple and easy to understand.
		The Temovex heat exchanger is equipped with heat exchanger of the cross-flow type made of aluminum plates.
		The heat in the exhaust air is transferred to the supply air via the plate.
	www.scanhome.ie /ventilation.php (1128 words)

	RenewAire Energy Recovery Ventilation
		The Energy Recovery Ventilator (ERV) and Heat Recovery Ventilator (HRV) are fresh air exchange appliances that take fresh air into a dwelling, clean and evenly circulate the fresh air and expel stale, polluted air while controlling humidity and minimizing heat loss/gain.
		HRVs are also known for drying the house air to uncomfortable levels in climates where winter can last months.
		These types of ventilation systems are still not that common, and many heating, ventilation and air conditioning contractors may not have very much technical expertise and experience with them.
	www.renewaire.com /ERV.htm (949 words)

	Paragon Systems > Heat Recovery > About
		A carefully planned heat recovery and ventilation system is designed to extract stale air from wet areas such as the kitchen,utility,bathroom,and toilet and supply clean, fresh air to all the living areas around the house.
		The heat recovery unit also enables you to ventilate even when it is cold outside.
		The entire heat recovery system can be controlled by a separate electronic control unit mounted on the wall which has indicator lights for the fans,filter and heater element.
	www.paragon-systems.co.uk /heat_recovery/about_heat_recovery.htm (153 words)

	Remodel Guide: Heat Recovery Ventilation
		Some HRVs mount like a room air conditioner in a window or wall opening; these are meant to handle individual rooms that have ventilation problems: bathrooms, laundry rooms, artist studios and darkrooms, for example.
		An HRV may be a practical solution where there is a radon or formaldehyde pollution problem--though this should be determined by an expert.
		A heat pump extracts heat from cold outdoor air and uses it to heat your house in winter.
	www.remodelguide.com /reports/guides/hrv.html (1748 words)

	Heat Recovery-Ventilation Room Air
		The unparalleled feature of heat recovery ventilation is that it recovers 60 to 75% of the heat in the exhaust air and returns it to the home.
		A heat recovery ventilator is similar to a balanced ventilation system, but the main difference is that it uses the heat in the outgoing stale air to warm up the fresh air.
		The core transfers heat from the outgoing stream to the incoming stream in the same way that the radiator in your car transfers heat from the engine's coolant to the outside air.
	www.selfbuildinnovations.com /heat-recovery.htm (453 words)

	ADM Systems UK - FAQs (Site not responding. Last check: 2007-11-03)
		The ventilation works together with a heating system so that the fresh air is warmed, ensuring there is no discernable drop in temperature.
		Heat recovery ventilation reduces the relative humidity to a level at which the house dust mite cannot survive, thereby removing a major trigger of asthma attacks.
		The heat exchange unit and most of the associated ducting is usually fitted in the loft or suitable voids (roof apex or eaves) with the air being distributed by neat ceiling mounted terminals.
	www.admsystems.co.uk /faq.html (1088 words)

	SOLACE Energy - Learn why an HRV gets rid of condensation, mold and musty odors
		Heat recovery ventilation is essential in airtight, well-insulated homes because if indoor air can't escape, fresh air and oxygen can't get in.
		Heat recovery ventilation corrects this condition by providing clean, fresh air and getting rid of the stale, humid air.
		After passing through the ventilator, fresh warm air is released to each room in your house, either independently ducted or integrated through a forced air system.
	www.solaceenergy.com /HeatRecoverV.htm (310 words)

	Scandinavian Homes; Ecological Heating and Ventilation Introduction
		We consider good ventilation essential, however it is difficult to achieve good energy performance without some form of reduction of the ventilation heat losses.
		In a balanced ventilation system the old air is extracted from the “dirty“ rooms, kitchen, bath and laundry, and fresh pre-heated air is distributed through a duct system to all “clean” rooms.
		The heat in the old air is amplified in the heat pump to heat the tap water.
	www.scanhome.ie /ecoheatandvent.php (769 words)

	Thermsaver - Frequently asked questions about Heat Recovery Ventilation
		In today's well insulated homes, up to 37% of the total heat loss takes place through ventilation air losses; therefore it is most important to achieve a balance between excessive ventilation with consequent heat loss, and sufficient ventilation for a condensation and odour free clean atmosphere.
		The heat in the air exhausted by these units is lost completely to the outside.
		When replacing kitchen and bathroom extractors with a central system with heat recovery, a substantial amount of the heat is captured and transferred to the incoming fresh air.
	www.thermsaver.co.uk /heat_recovery_ventilation/heat_recovery_ventilation_faq.html (1214 words)

	Enertran™ Energy Transfer Systems
		This measurement unit is necessary to measure the ventilation capacity of a room or a house in order to conform to appropriate home or building ventilation standards.
		Since the HRV is integrated, as an integral part of the home heating and cooling system, it offers an application designer/homeowner, the opportunity to incorporate all the benefits associated with a standard Geothermal and a Heat Recovery Ventilation System into one complete system.
		The HRV system can be set up to run continuously on low speed, then jump up to high speed when the heating or cooling system is operating.
	www.enertran.ca /heatrecoveryvent.html (1322 words)

	Heat Recovery -- Recommendations and Resources (Site not responding. Last check: 2007-11-03)
		Heat recovery ventilation is a ventilation system that employs a heat exchanger between the inbound and outbound air flow to save on energy required for heating (or cooling) the room.
		One of the aims of the recovery position is turning the unconscious person on their side so that if the person vomits, the person will throw up properly.
		When an unconscious person is lying flat on their back, he or she is at risk of having the stomach contents come up the esophagus and fall back into the lungs and subsequently suffocate.
	www.becomingapediatrician.com /health/72/heat-recovery.html (1080 words)

	Energy Recovery Ventilators Mitsubishi Lossnay Renewaire Breeze
		EV-130 is a ducted, whole-house energy recovery ventilator sized to provide general ventilation in most homes.
		EV-200 is a ducted, whole-house energy recovery ventilator sized to provide general ventilation in most homes.
		Outside air brought in for ventilation is reduced in temperature and humidity because its heat and humidity is transferred to the exhaust air stream.
	www.soundgt.com /recvent.htm (549 words)

	John Cantor Heat Pumps Machynlleth UK (Site not responding. Last check: 2007-11-03)
		A passive heat recovery ventilation system takes stale air from kitchens, toilets and bathrooms, passes it through a simple heat-exchanger where incoming fresh air is heated by means of the energy in the exhaust air.
		The total heat requirements for the building will be reduced, resulting in a smaller (hence cheaper) heating or heat pump installation.
		The German made Stiebel Eltron LWZ161 heat recovery unit is an extremely efficient, high quality device that recovers an amazimg 90% of the heat that would be otherwise lost.
	www.heatpumps.co.uk /vent.htm (542 words)

	Ventilation \| Heat recovery systems, Mini AHUs, Air purifiers, Ventilation systems
		The Aventis Heat Recovery and Ventilation Unit will draw air in from outside to ventilate a premises, transfer heat to it from warm polluted air that is being extracted from the premises, thus reducing the need to heat the incoming fresh air to a minimum.
		This compact mini air handling unit is for use in ducted air conditioning systems and is used for heating and ventilation of small commercial or industrial premises.
		This is a very compact mini air handling unit that provides air conditioning, heating and ventilation to small commercial and industrial premises.
	www.jsairconditioners.com /products?sub_cat=188 (256 words)

	Heat Recovery Ventilation
		The process of replacing stale, contaminated indoor air with clean, filtered, outdoor fresh air is best achieved using Mechanical Ventilation with Heat Recovery.
		Heat Recovery Ventilation units utilise energy efficient heat exchangers to transfer heat from outgoing stale air to incoming fresh air, greatly reducing the energy required to maintain a constant room temperature.
		As the fresh outside air is warmed by the Heat Exchanger the relative humidity is lowered below the level needed to control condensation, mould growth, building fabric deterioration and the house dust mite.
	www.allvent.com /heat_recovery_ventilation.html (146 words)

	Heat Recovery / Ventilators
		Central ventilation systems and heat recovery systems ensure the reduction of air pollutants caused by building materials, everyday household products, lingering odors and moisture which condenses on windows reducing visibility and causing damage.
		As the two airstreams pass each other within the heat exchanger core, heat is transferred from the outgoing stale air to the fresh incoming air.
		The HRV unit is able to capture up to 95% of the energy from the outgoing stale air.
	www.dunnheating.com /heat.html (331 words)

	Sustaining Tower Blocks: THE DESIGN GUIDE: VENTILATION
		An efficient ventilation system can ensure that the built-up indoor humidity, air pollution [including, carbon dioxide and carbon monoxide], biological contaminants and odour is expelled without losing the heat in the air.
		The heat from the outgoing air is transferred to the incoming air stream with the help of a heat exchanger without mixing the airstreams.
		Typically, in an air tight flat, the heat recovered annually by a heat exchanger system is proportional to the temperature difference between the inside and outside of the flat.
	www.sustainingtowers.org /VENTILATIONa.htm (938 words)

	heat recovery ventilation system
		Whatever the property, restaurants, leisure facilities, student/key worker accommodation a controlled ventilation system is required to operate in a continual quiet, energy efficient manner.
		Without the generally higher costs incurred for full air-conditioning, a Heat Recovery ventilation system will provide full filtered fresh air and extract air ventilation, where necessary, with an option for additional cooling.
		As the Heat Recovery ventilation system recovers 60-70% of the heat within the extracted air during the colder winter months ventilation is provided in an energy efficient manner.
	www.villavent.co.uk /heat-recovery-ventilation-system.htm (218 words)

	B Heat Recovery Ventilation (Site not responding. Last check: 2007-11-03)
		With a tightly built envelope, a quiet, dependable system automatically delivers fresh air where and when it is needed, and removes stale air from the home.
		In the process, the system transfers 80% of the heat to the incoming fresh air.
		In summer, if the outside temperature is higher than inside, the system works in reverse, removing heat from the incoming air.
	www.issaquahhighlands.com /ideahome/B.html (144 words)

	Improved indoor air (Site not responding. Last check: 2007-11-03)
		An energy efficient solution is to use heat recovery ventilation.
		the ventilation units on the outside wall, it was necessary to reduce the thickness of the heat
		For conventional heat recovery systems, the ration is 1:3, the pay-back period is 8 years and the
	www.nova-air.dk /engelsk/im_air.htm (1132 words)

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