Save Money With Propane Refrigeration

Saving money around the home has never been easier! If you currently have an available propane line to your house and are looking to buy a new fridge, consider a propane refrigerator. A propane refrigerator requires about 2 gallons of propane a week to run, assuming normal household ambient temperatures. With propane costing around $2.50 per gallon, you could be running your refrigerator for just $20.00 a month. Propane gas fridge freezer combination units are but more expensive outright but increase your savings when you consider the amount of electricity a freezer requires to stay at freezing temperatures. A propane freezer unit alone might save you nearly $100 a month depending on what your current electricity cost is.

It seems hard to understand how propane can be used to keep things cold. But all refrigerators, whether it is an electric or propane refrigerator, work off of the same underlying principle. They use what is called a “heat pump”. Heat pumps basically use a heat differential to either heat or cool something. That is, depending on the system, either hot or cold is applied to one end of the pump to produce the opposite effect on the other end of the pump. In electric refrigeration a compressor is used to compress gas into liquid. When the pressure is released the evaporation of the gas absorbs heat, thereby chilling the inside of the refrigerator. The evaporation step heats up the outside of the refrigerator so that the inside can be chilled. A propane refrigerator or a propane freezer uses the same principle. In this case a propane burner is used to heat up a water and ammonia mixture. The ammonia evaporates, leaving the water, and is condensed in a condenser coil. The liquid ammonium then trickles into a chamber of hydrogen gas. The resulting chemical reaction is endothermic and is thereby used to absorb the heat from the refrigerator compartment, chilling the contents. This mixture eventually dissolves into the water releasing hydrogen gas…

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