How to build a Homemade DIY Geothermal Heat Exchanger to Cool Your Garage

    This project goes over the build of a Geothermal heat pump that takes the hot air in your garage and cool it down by transferring that heat into water .The cold water is pulled out of the ground through a shallow hand dug well and send to a heat exchanger inside the garage . A fan attached to the heat exchanger blows out the cold air into the garage . The heat exchanger absorbs the existing heat inside the garage . The warmed up water is then removed through an exhaust pipe.

    Just a few feet down the earth is a consistent 55 degrees, summer or winter. Water at that depth is about the same temperature. To harness the cold water down below, we dig a shallow well. To do this we use a post auger and a 3 foot long well point that is attached to a 10 foot three quarter inch pipe using a drive coupling. We start by digging a hole using the post auger till the water table is reached and then start driving using the well point for additional two to three feet until it is submerged under the water table.

    A two to three foot trench is dug from where the well is installed to the garage . A One inch poly pipe is connected to the well pipe using a barbed coupling and is buried inside the two foot trench all the way to a well jet pump .The trench is dug down at least two feet until you hit some hard pan clay that is about where the temperatures begins being more constant. This keeps the pipe cool under the earth.

    The other end of the poly pipe coming out from the trench is connected a 1/2 HP Flotec Shallow well jet pump . The pump can be powered by a solar panel. The pump is kept outside the garage as it generates a lot of heat. If it is kept inside the garage, cooling effect from the water will be undone by the heat generated by the pump.

    The output of the pump is connected to a three quarter inch copper pipe inside the garage. It is then further connected to a water pressure tank with the help of a brass tee and a union. A relief valve is also attached to the tee to empty the water tank if the pressure gets too high. A water pressure tank is used prevent the pump from failure .It also acts as a buffer storage.

    The other end of the brass tee is connected to two pipes. One pipe goes outside the garage to a faucet and the other pipe is connected to a radiator that acts as a finned tube heat exchanger.

    The heat exchanger captures the hot air surrounding the garage and stores the heat into the finned coils within the radiator .The heat is transferred to the water flowing through them . An exhaust line from the radiator carries this hot water to outside the garage.

    Two flexible hose pipes connects the input of the heat exchanger to the water tank and output to an exhaust pipe. A box fan is placed in the front of the radiator to blow the cool air . The fan can be powered by Solar panels. Once the water starts running through the radiator , we start the fan

    • How to build a Homemade Copper Pipe Solar Water Heater and get super hot water fast and free
      This project goes over the build of a Homemade Copper Pipe Solar Thermal Water heater which can produce super hot water fast .This reaches temperature at or above 150F with air temperature from high 40's to low 50's. Here are the materials needed for this project are : Two 10 foot half inch copper pipes - Type L 16 half inch 90 degree elbows 18 tube straps 23 X 35 half inch plywood for the back 18 X 20 half inch plywood for the pipe support 2 X 2 lumber at 20 and 35" for the sides 4 and 3/8 inch square dowel rods for the glass support 1/2 inch threaded pipe adapter 3/4" to 1/2" garden hose PVC adapter 1/2 inch coupler. The first step is to cut down a bunch of two foot sections out of the 10 foot sections using a copper cutter. We cut 7 of them and 2 more for the top and bottom which are 30 inches each. Next we cut 8 sections of 1 1/8" for the connecter pieces between elbow joints. This allows the pipe to be spaced exactly two inches apart on the board evenly all the way up and down Connect the pipes using couple of elbows and a 2 inch connecter piece and solder them .Do it for the rest of the pipes. Slide the pipes into the plywood frame collector and fasten them onto it using 3/8 inch screws to be more secure. A small internal board is placed onto this frame which helps the pipe to lay flat inside .Also it holds the pipe at right height so that it exits through the right holes. It allows for the pipe to be easily removed from the collector frame. Cut the wooden dowel rods and put inside the collector to support the glass. Sand them a little bit so that the copper pipe will fit back through. A straight coupler is welded on to the end of outlet then you can add any pipe or connecter or wherever you want the water to go. The inner board is secured to the back board using some three quarter inch screws. The 4 corners of the 2 X 2 wood frame is secured using 2 and half inch wood screws and the corners of the back board is secured by one and one half inch screws. A 20 X 32 inch glass is placed on the frame with the help of some silicone caulk around the edge. The highest piece of copper in there is eighth of an inch away from the glass and its painted black.
    • DIY Video:How to build a Homemade Super Efficient Portable Rocket Mass Heater from reclaimed and repurposed items and save upto 80% on your heating bills.
      This video shows the complete build of a Portable Rocket Mass Heater. This heater goes together like an erector set and comes apart just as easily. It's custom mini mass. This heater can save you up to 80% on your heating bills. It is super efficient. This heater is beautiful and built completely from reclaimed and repurposed items. This rocket mass heater is Artistic one of a kind! This rocket mass heater is made with air crete, and is budget friendly, handmade, and better than a wood stove.The advantage of this rocket mass heater is the huge increase in the efficiency of capturing and storing the available heat.

      Watch the DIY Homemade Efficient Portable Rocket Mass Heater Build Video

    • How to build an Inexpensive Geothermal Solar Air Conditioning System to Cool your Garage using an Old Car Radiator ,Solar Panel.
      This project goes over the build of a cheap Geothermal Solar air conditioner that can cool your home with the Earths natural cool temperature. A few feet underground, the temperature remains between 55 and 60 degrees Fahrenheit. This is true regardless of the weather above ground.The geothermal unit siphons heat from inside and vents it into the water or refrigerant in the loop. The cool temperature underground then lowers the temperature of the liquid back to 55 degrees. In my case when I draw the water well, the static water level is 2 feet above the ground and and what that means that there is a free flowing well that runs down the hill. This is connected to a 55 gallon drum buried in the ground to keep it cool. A circulator pump is used to pump the water to the radiator. The water well is about 85 feet.We drop a 10 foot pipe in there and get a cheap pump from a car and probably some check valves valves and maybe start a natural siphon and run out of solar. You will need an old car radiator for this project. The Radiator used here is from an old Volvo Car. This is used to circulate air using a solar panel. The water coming in is connected to the radiator and the water coming out the is attached to a PVC drain pipe . The radiator is hooked to a motor connected to a solar panel. A Temperature sensor is attached to the radiator fan to detect the indoor temperature. The pump is out of the same Volvo car from which I got the radiator. A Coolant temperature sensor can be added to measure the temperature difference from the inlet versus the outlet and just see how much heat get pulled into the water . The system works on Solar.You will need a Charge controller,DC to DC Convertor and 12 or 24V batteries.