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Frequently Asked Questions

What is the efficiency loss of a heat exchanger?

Radiantec : FAQ Frequently Asked Questions, Radiant Heat, Sy...
Whenever you have a heat exchanger, you must have a temperature difference in order to force the heat to cross the heat exchanger barrier and go to the other fluid. No heat is really lost, but the heating unit may run a little less efficiently at a the higher temperature.
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What is a heat exchanger and how does it work?

Blaze King FAQ's Frequently Asked Questions
Blaze King gas appliances are unique to the industry in that most Blaze King gas models have heavy-duty heat exchangers. Superior engineering and design has allowed Blaze King to fit the maximum amount of square inches of surface area of heat absorbing steel into each model. The more surface area of steel, the more energy absorbed during the combustion process. Then, the variable speeds fans that are standard in all gas models then moves that heat into your home.
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I was told that I need a new heat exchanger, how do I know that I'm not being taken advantage of?

Hi-Ho Petroleum: Frequently Asked Questions
Unfortunately, there are three kinds of service companies out there. The kind that just wants to sell you something whether you need it or not, the kind who are just plain incompetent and there are companies that only sell you what you need, like Hi Ho Petroleum. One good rule of thumb is to get a second opinion. Anyone who pressures you to replace a part might not have your best interest in mind. On the other hand, your equipment may be dangerous to operate.
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Can I install a ground source heat exchanger myself?

What is geothermal? | Frequently Asked Questions
It's not recommended. Thermal fusion of the pipe, drilling and trenching are procedures best handled by licensed professionals. Nonprofessional installations may result in less than optimum performance, which could cancel out anticipated savings
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What is a cracked heat exchanger?

HVAC For Life : : FAQ Tips and Advice
The heat exchanger is the area of the furnace where "heat" is exchanged-from the fire at the gas burner to the air that is recycled into the home through the duct system. The heat exchanger is sealed so that the products of combustion from the gas burner never come into contact with the air that goes back into the home.
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What are the heat exchanger loop pipes made from?

JustGeothermal Systems Website - FAQ
Geothermal earth loops are made from High Density Polyethylene, (HDPE) pipe. The circuits are either 3/4" or 1 1/4" diameter and headers are either 1 1/4" or 2" diameter. The resin is PE 3408 having a cell classification, 345564 or 345434 per ASTM Standard Specification D3350, certified as being in accordance with CSA Standard B 137.1. This is the specification referred to in CSA 445 and CSA 448 and thus is mandated by Canadian Building Codes.
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Can I install an ground heat exchanger myself?

ABOUT EESC
It is not recommended. In addition to thermal fusion of the pipe, drilling and trenching are procedures best handled by licensed professionals. Nonprofessional installations may result in less than optimum performance, which could cancel out anticipated savings. Also, warranties are usually void if the system is installed by a non-authorized dealer.
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How do I determine if my Reznor Unit has Stainless Steel Heat Exchanger?

Southern Air Concepts, Inc. - Frequently Asked Questions
If your Serial number starts with an S or an E, that would determine that you have either 321 SS Ht. Exchanger or 409 SS Ht. Exchanger. Heat Exchangers fabricated from 409 SS are magnetic.
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Why is copper so efficient in heat exchanger applications?

CDA UK: Frequently Asked Questions
Because the thermal conductivity is so high - it is 23 x better than stainless steel or titanium and 1.6 times better than aluminum.
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Do I need an air-to-air heat exchanger?

Foam Homes, Foam Houses, SIPs Homes, SIPs Commercial Buildin...
Air-to-air heat exchangers, and/or other types of mechanical ventilation are recommended in all tight houses, including those constructed with Universal Foam Tech, Inc. panels. Universal Foam Tech, Inc. recommends that air-to-air heat exchangers be incorporated into all Yes. A study by the Energy materials Testing Laboratory has show that EPS insulation does not absorb appreciable moisture, even under conditions characteristic of prolonged, cold, damp winters.
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Why don't I get as much heat out of my new high efficiency furnace?

Kidder Heating and Air Conditioning, Inc.
Actually, you get more heat out of every dollar's worth of gas you buy with a high efficiency furnace compared to a 15-20 year old furnace. What you're probably referring to is the temperature of the air coming out of the register. This feels cooler because of the increased volume of air on your new furnace, therefore it feels cooler because the temperature rise is not as great.
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What is the efficiency of the atmospheric upward heat convection process?

AVE - FAQ
The efficiency of the atmospheric process is the Carnot efficiency calculated using the average temperature at which heat is received as the hot source temperature and the average temperature at which heat is given up as the cold source temperature. Taking the average temperature of the hot source as +20?C and the average temperature of the cold source as -20?C, the efficiency is 14%. 14% of the 128 W/m2 transported upward by convection is converted to work.
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Is there efficiency loss in winter?

Frequently as questions about heat pumps and their applicati...
Yes. Air source heat pumps draw their heat from the air. In winter the efficiency is reduced as there is less heat in the ambient air. We take this into consideration with our sizing. Even in these colder conditions our heat pumps are still more efficient compared to most other forms of heating. Our heat pumps for hydronic floor heating have proven to be very effective operating in colder air temperatures and achieving hotter water temperatures.
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What is the best type of steam trap to use on a shell and tube heat exchanger?

Frequently Asked Questions
For most heat exchanger applications, a Float & Thermostatic (F & T) Steam Trap works best. Because our F & T Trap has a separate thermostatic element, it is able to quickly vent air from the shell of the heat exchanger. The float element modulates to drain condensate at a rate equal to the condensing in the heat exchanger.
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How do I avoid heat loss?

FAQs
To avoid this in the cooler months, manage the airflow according to the number of people in the space, ideally using automated controls, so that if the room is almost empty the airflow is kept very low. Keep the ventilation running to manage the smoke. Don’t let the smoke build up and then blast cold air.
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How does it prevent heat loss?

Monodraught Ltd - FAQs
The bottom diffuser is sealed to the SunPipe, no air can enter the SunPipe system, creating virtually a column of still air. It is, therefore, similar to a giant double-glazed unit, since it is known that a still column of air is an excellent insulator against heat transfer. The 'U' value of a SunPipe is 1.63 W/m2 Back to FAQ BookletReturn to Top of page
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Is there any heat loss through our sun tube?

Eco Light Tunnel tubular skylights
Heat loss is comparable to that of windows (comparing tunnel with surface 0,25m2) and it equals U=2,09 W/(m2?K), for tunnel with insulated tubing ? research conducted by Technical Institute in Warsaw.
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What does heat loss mean to me?

MAXX-R Pipe Insulation System FAQ
More heat loss = more wood burned. Let???s assume that your system is designed to give up 15??F across the hydronic heat exchanger located in your home. If you have a 15??F drop in temperature from your furnace to the home and a 15??F drop from the home back to the furnace, you have used enough energy to heat 3 homes just like yours. Plus, you are probably loading your boiler 3 more times than necessary.
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Can I measure this heat loss?

MAXX-R Pipe Insulation System FAQ
Actually, you can. Turn off all inside hydronic heat exchangers and use a hand-held infrared heat sensor (available for a low cost at many hardware building supply) to measure the temperature on the feed and return lines at the boiler. Feed pipe temperature minus return pipe temperature tells you your heat loss. The insulation on your boiler???s feed and return lines is not doing its job ??" and you are probably experiencing an extreme drop in water temperature.
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How can heat loss be reduced?

Sustainable Solutions
Explore the advantages of designs that utilise high thermal mass (see Building Design and Specification). Include unheated ‘buffer’ spaces attached to main building areas to store the sun’s heat and reduce exposure to cold (e.g. porches, conservatories and atriums).
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What about thermal value \ heat loss?

Frequently Asked Questions
The 3D Panel System has been designed with maximum environmental comfort in mind. A wood structure simply cannot compare to the comfort level available with the outstanding energy savings created by using the 3D Panel System. 3D Panel will keep you cooler in summer and warmer in winter. The modified expanded polystyrene core meets all thermal requirements.
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FAQ
The Monolite System has been designed with maximum environmental comfort in mind. A wood structure simply cannot compare to the comfort level available and the outstanding energy savings created by using the Monolite System. The simple facts are that, Monolite will keep you cooler in summer and warmer in winter. The super-Insulating polystyrene core meets all VA, FHA and HUD thermal requirements.
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NexTech Building System - The Concrete Insulated Form Buildi...
The Monolithic Building System has been designed with maximum environmental comfort in mind. A wood structure simply cannot compare to the comfort level available and the outstanding energy savings created by using the Monolithic Building System. The simple facts are that, Monolithic Panels will keep you cooler in summer and warmer in winter. The super-Insulating polystyrene core meets all VA, FHA and HUD thermal requirements.
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Why does the heat exchanger air temperature feel cooler than a direct flame burner?

Dryair - Heat - Thaw - Cure - Dry - Kill
The DRYAIR Heat Exchanger has been designed to eliminate "Hot spots" in a building by using high air flow. Example: a direct flame burner of equivalent size or rating will output 236 L/sec of air at 205 °C while a DRYAIR PHE-60EU portable heat exchanger will output 1,085 L/sec of air at 49 °C. This is an equal amount of KW output, but the effect is different.
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Are air conditioners and heat pumps efficiency rated?

Air Conditioners - Frequently Asked Questions
Yes. Central systems are rated by the seasonal energy efficiency ratio (SEER). Many older systems now in use have SEERs of 6 or below. By 1994, the average SEER for all units shipped by manufacturers in the U.S. improved to 10.61 for central air conditioners and 10.94 for central heat pumps. The higher the rating, the more efficient the system.
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What are the environmental and energy efficiency benefits of Kensa heat pumps?

Kensa Ground Source Heat Pumps. FAQ's
Heat pumps offer the lowest-carbon emission method of heating any building. Unlike boilers, there is no pollution on-site. As the electricity grid gets cleaner, and more renewable electricity is brought on line, so the carbon emissions from the heat pumps fall. There are no flammable fuels or tanks; no flue, no pilot light and no toxic exhaust gases. There are no road miles from LPG or oil tanker deliveries - serious pollution which is often not considered.
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what is the formula for comparing efficiency up-grades for a heat pump from AC/propane unit?

Ask the Experts - EnergyVortex
Please provide the capacity of the GE make heat pump model BWC0900400A2. Also include nominal airflow. we have a 2160 sq ft house "split type" master on one side rest of bedrooms on other side. Unit in garage in rafters, what size unit should we actually have. Currently we have 3 ton and it isn't getting job done. Runs incessantly. Same with heating. Thanks.
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Is heat loss a problem with high ceilings?

Frequently asked Questions
The height of the ceiling is not the problem in heating any house. Getting access to the heat already generated is the problem. Even with a low 2.4m ceiling two thirds of all heat is in the top third of the room, and as we don’t live in the top third we can’t enjoy the existing warm air without some form of mechanically mixing the air. The best and most cost effective way is with a ceiling fan.
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How far from the house can the boiler be? And what will the heat loss be?

Treco FAQ, Frequently asked questions about Treco Green Ener...
The boiler can be fitted up to 100mtrs from the property, and it will loose up to 5 watts per linear metre.
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