Industrial refrigeration and electromechanical projects of high quality


Heat pumps, truths and lies.

Friday, 13 April 2012

Given the planned increase in oil prices this coming winter, many consumers consider installing a heat pump as a measure to reduce heating costs. The market investigation usually follows the loads concerned with a barrage of information that ultimately makes choosing the right solution more difficult than it seemed before. What all this is true after all?

1. Heat pumps do not heat consuming electricity. They use some but only the necessary for the compressor to produce the  mechanical work needed to transfer multiple (usually from three to six times over)  quantity of heat from cold abient to warm heated space. Without the compressor operation in accordance with the second axiom of thermodynamics, heat transfer would be upside down so that eventually the heated space and the environment will exchange heat until they equalized. (That is why after turning of heating the room gets cold). This function is analyzed in more detail from the leading manufacturer of heat pump DAIKIN here.

2. A boiler for wood or pellet is a good solution as an alternative heating source? The answer to this question is related to many factors. A review of the evolution of heating would help in this response. Before using oil and natural gas to heat our homes, we used oil stoves and fireplaces. Fireplaces of any home for heating and cooking is a cultural element that is found in the Homeric epics and even earlier. The reason why they were replaced were  because the concentrated energy stored in a small amount of cheap fuel then made the daily process of transferring  wood unnecessary. In other words it was no longer needed to carry wood and ashes. The next step was the application of hot water boilers and radiators that could now distribute the generated heat in all rooms (even the bathroom!) and not just in the center of the house and around the burning point. Installing a wood furnace or pellet we bring back  in our daily lives processes  that we have forgotten like the transport of wood and ashes, which were replaced by turning the thermostat knob. So to see if anyone would do well to install a wood or pellet boiler should answer the following questions:

- Can I transfer the necessary daily amount of fuel - careful here for large applications such as hotel boilers hotels, multiapartment buildings, etc. (even on days I'm tired and I return from work late and I just want to rest in a warm house ?)

- Can Ι clean on a regular basis the boiler and remove ashes?

- Do I have access to cheap and good quality fuel pelet or wood?

- Can I pay once the higher price for installing a heating system with heat pump?

The answer is not the same for everybody and not all the above solutions are suitable for everyone.

- continued