The idea of using an absorption fluid as a refrigerant carrier derived from the drawback of VCR (vapor–compression refrigeration) systems that the gas compression requires a high work input. A pump that requires practically no work to increase the pressure in the refrigeration system replaces the complicated and work-consuming compressor. There are two major advantages of absorption refrigeration systems (ARSs) compared with VCRs (vapor–compression refrigeration): No CFCs or HCFCs are used as refrigerants, and they use heat from different sources, such as combustion, industrial processes, waste heat (an economical solution for recovery), or solar heat. (more…)
Heat-actuated heat pumps are cooling systems requiring no electricity for operation. Rather, a heat source is used, avoiding the ne ...
The term cryogenics derives from the Greek kryos, for icy cold. The upper limit that characterizes the cryogenic region of the temp ...
Separation is a unit operation used in absorption heat pumps and chemical processing applications such as solvent extraction and pr ...
Active solar hot water systems water are usable with air, liquid, vapor or liquid collector fluid or gas to liquid process. Hot ...
Micro technology can be employed to produce miniaturized refrigeration and cryocooling systems. Although process intensificat ...
Anyone who has ever been caught in the rain or snow knows that just being inside and out of the elements is a real lifesaver. But, when cave dwellers figured out how to build a fire, they opened a new chapter for the human race: central heating. Humans have long had the urge to congregate around the warmth and flickering light of fires. Before long, somebody even figured out how to use that warmth for cooking. (more…)
In today's times staying in a budget is very important. So doing maintenance to certain things yourself can be a good way to st ...
HVAC (heating, ventilation, and air-conditioning) systems vary depending on the complexity of room units size from single rooms ...
Spring is here, which means that the summer heat is already here in Arizona. We all know how essential having an effective air ...
The Geologists Association president advocates the use of geothermal energy by its high durability and low maintenance. Besides a r ...
If a space is occupied on a predictable schedule, you can use either timeclocks or setback thermostats to turn the conditioning ...
Extensive insulation repairs are usually done by contractors having the specific skills and equipment appropriate to the type of insulation being installed. Experience indicates that some insulation methods are much better than others, particularly for buried pipe.
Become familiar with the advantages and disadvantages of all the insulation methods before initiating the work. (more…)
Visual inspection is usually good enough for under roof insulation that is accessible, as in boiler rooms, pipe chases, and ste ...
Insulation is what keeps the heat energy of a boiler system from leaking out of the system on its way to the end users. Inspect ...
Imprinted on every batt or blanket of insulation or on every bag of loose insulation is its R-Value. The higher Insulation R-Value, ...
In many existing buildings, the only economical way to improve the thermal resistance of the roof is by having insulation insta ...
If water is put on the floor on a cleaning operation, it tends to dry rapidly after a short time. In this position, we say that ...
Heat has a enormous influence in our daily lives. Heat quantity exposed in our live has related to the foods we eat, the temperature changes of our house and buildings, and clothes we wear. Heat can be transferred between different objects with different temperature. But do you know that heat is different from temperature? (more…)
The comfort heating system in a building brings itself to the concept of complete heating operating unit. In order to work prop ...
As a result of high and rising costs of fossil fuels and fossil fuels affect global environment concern , and by the reduction ...
In these regenerators the heat energy transfer between primary and secondary fluid is primarily by radiation and its installati ...
Active solar hot water systems water are usable with air, liquid, vapor or liquid collector fluid or gas to liquid process. Hot ...
Energy exists in many forms. Some of energy forms are simple to use and identify as energy. But other forms of energy can not b ...