Potinpot refrigerator wikipedia republished wiki 2. Students will see a greater change in temperatures if they do not uncover the pots during the wait period. Instant pot small kitchen appliances for sale ebay. Experimental comparative analysis of clay pot refrigeration. The wikipedia article potinpot refrigerator says that sand in the outer pot somehow affects the cooling efficiency of refrigerator. A practical zeer pot evaporative cooler nonelectrical. I am against using electricity for either heating or cooling, so i am always.
This would seal the water inside the pot and prevent it from evaporating. It uses only clay pots, one smaller than the other and separated by wet sand. In this article, we experimentally investigate the influence of the main physical parameters in model pot in pot coolers. Clear space for the metal pan in your refrigerator. The idea of a pot in pot cooler is to create conditions so that the evaporation rate off the pot containing the plant is as high as possible the more evaporation, the cooler the pot. Oct 31, 2014 in all cases pot in pot refrigerator is kept for natural convection. The wikipedia article pot in pot refrigerator says that sand in the outer pot somehow affects the cooling efficiency of refrigerator.
Try these ideas for instant pot freezer cooking to make dinner fast and fussfree. Instant pot freezer cooking takes simplifying meal planning to a whole new level. I am going to call them evaporative refrigerators since they operate by evaporation and are used like a refrigerator. Apr 23, 2012 the pot in pot cooler potting cypripediums for a hot climate for those of us who simply wont be stopped from having plants we shouldnt be growing given the local climate, the pot in pot cooler method is a perfect solution. Plug the hole in the bottom of each pot with a bit of clay or duct tape. This time the inside of the potinpot was definitely cooler than the air outside. The evaporation of the outer liquid draws heat from the inner pot. Meat is able to be kept in the pot for up to two weeks compared to just a few hours without using this pot in pot refrigerator.
In this activity on page 2 of pdf, learners create a lowtech refrigerator that requires no electricity to keep food from spoiling. A zeer pot refrigerator, also known as a potinpot refrigerator, or simple a zeer in arabic is a type of clay pot evaporative cooling device that provides a way to keep vegetables fresh without the use of electricity. It is a device that keeps being rediscovered even though various versions of the device have been used for thousands of years. Cooling through evaporation is an ancient effective method of lowering temperature. Instant pot chicken piccata a classic italian dish, loaded with flavor. The potinpot preservationcooling system was invented mainly to help rural. Nov 02, 2019 how to make a pot in a pot refrigerator. They may notice that the temperature in the control pot has dropped a small amount. Cook on low setting for 8 hours or until pork is tender and falls off bone. My mom used to always tell me to put left overs in a tupperware and place in the fridge. Zeer potinpot refrigerator higher humidity results flower. The user manual for the crockpot is eight pdf pages long and half of those are hints, tips, and recipes. The zeer pot consists of two pots, one inside the other with a layer of.
The pot in pot cooler potting cypripediums for a hot. The pot in pot refrigerator also known as the zeer was invented in 1995 by nigerian teacher mohammed bah abba. The space in between the two containers is filled with sand which is simply humidified with water. Simulation of pot in pot refrigerator umesh c1, dr. Thus, by trying to optimize this setup by manipulating certain variables covered in conclusion, the cost can be further brought down. A pot in pot refrigerator will cool food down by evaporative cooling. The design of the pot in pot refrigerator is a very simple one. Time after setting up the potinpot refrigerator temperature inside the pot degrees celsius. As the water in the sand between both pots evaporates, it moves to the drier outer pot, by the laws of thermodynamics. Fig 5 shows the variation of temperature t1 when pot in pot refrigerator is filled with 1. A pot in pot cooler is a simple invention that allows for longer storage of produce without refrigeration. The pots are simple devices that can be produced locally by artisans, and made from local clays.
Aug 19, 2009 a pot in pot cooler is a simple invention that allows for longer storage of produce without refrigeration. The simple clay pot refrigeration is simply suited for preserving the vegetarian food in. Instant pot duo mini 7in1 electric multi cooker, 6 quart, 11 onetouch program. Pdf potinpot cooling device is basically a food cooler that utilizes the effect of. Experiments have also shown that in zeer pots, charcoal and gunny cloth can be used as effective alternatives to sand 6. It needs no electricity it is made by putting a clay pot inside a larger clay pot with wet sand in between the pots and a wet cloth on top. Oct 02, 2011 zeer pot in pot refrigerator higher humidity results this is a design dating back to as early as 2500 b. Busting myths about the zeer pot rebuilding civilization.
Heat transfer and evaporative cooling in the function of. Does storing food in pots and pans in the refrigerator. This refrigerator with no moving parts is great for exploring evaporative cooling, as well as scientific innovation, especially since it has been used successfully in africa. The clay pot cooler an appropriate cooling technology pdf. The pot in pot refrigerator works off the evaporation of the water, cooling the system, and the conduction of the heat away from the inner pot to the water and sediment. In a community or situation without electricity, storage of food longterm can be tricky. Collect 1 large unglazed clay flower pot 1 smaller unglazed clay flower pot that can fit inside the large pot clay or duct tape sand water dishcloth or towel thermometer build your refrigerator. She said the if you put the pot or pan in the fridge to store the left overs, it would poison the food. French door refrigerator with internal water dispenser. A potinpot cooler is an affordable electricityfree refrigerator which uses the latent heat of vaporization of water to maintain a low temperature inside an inner compartment. Pebbles are the best heat conductor of the three sediments tested. Diy potinpot refrigerator cement flower pots, concrete.
Thaw overnight in refrigerator and dump into slow cooker. Potinpot method for the instant pot once a month meals. Heat transfer and evaporative cooling in the function of pot. This causes a temperature drop by taking away heat from the inner chamber of the pot. Heat and mass transfer analysis of a claypot refrigerator article pdf available in international journal of heat and mass transfer 55s 1516. From nigeria the pot in pot a refrigerator that runs without electricity designed in 1995 by mohammed bah abba, a professor in nigeria, the pot in pot cooling system helps farmers by reducing food spoilage and waste, increasing their income and limiting the health hazards of decaying foods.
If you dont already know, a zeer pot is a type of evaporative refrigerator. The simple clay pot refrigerator is ideally suited for preserving vegetarian food and water in hot and dry climates. The technology was perfected in nigeria by mohammed bah abba, between 19951997. Pdf development and performance evaluation of potinpot. Water is then poured into the sand and a damp cloth is placed over the opening of the pots. Potinpot clay refrigerator or zeer is a low cost traditional technology that can provide cooling refrigeration without electricity. Spinach for example that would normally spoil in a day can now last 12 days. This necessitates the use of pots made of porous material such that water can migrate from the inner wall of the vessel to the outer easily, thus evaporating.
How to store leftovers in metal pots healthy living. In this article, we experimentally investigate the influence of the main physical parameters in. Pdf heat and mass transfer analysis of evaporative cooling process in a potin pot cooling system is done based on reynolds flow hypotheses. The steps for making a potinpot refrigerator are outlined below in case the reader is unable to open pdf files. Potinpot refrigerator simple english wikipedia, the free.
A potinpot cooler is an affordable electricityfree refrigerator which uses the latent heat of vaporization of water to maintain a low temperature inside an inner. Experimental comparative analysis of clay pot refrigeration using two different designs of pots article pdf available february 2016 with 2,773 reads how we measure reads. Its not the same as having a fridge, but given it doesnt require electricity, this could be an excellent backup for people looking to. The cooling function is based on the principle of evaporative cooling and is working best in hot. My boyfriend does this all the time and ive always refused to eat the food. More information about the potinpot cooling system. If it is a large metal pan, make sure that you put it as far back into your refrigerator as possible in order to avoid blocking other food items from your view. The refrigerator works on the evaporative cooling principle. Time after setting up the pot in pot refrigerator temperature inside the pot degrees celsius. Apr 19, 2017 potinpot method for the instant pot on april 19, 2017 by once a month meals you got your instant pot out of the box, you did the water test, made rice, sauteed something, made some soup and now youre feeling pretty good about your fancy new appliance you are ready to take it to the next level. French door refrigerator with internal water dispenser stainless steel. On the other hand, the instant pot has a 22page user manual. Making a pot in a pot refrigerator the sustainability box.
A zeer pot refrigerator, also known as a pot in pot refrigerator, or simple a zeer in arabic is a type of clay pot evaporative cooling device that provides a way to keep vegetables fresh without the use of electricity. Busting myths about the zeer pot zeer pot example image credit. Zeer potinpot refrigerator higher humidity results. It uses a porous outer clay pot lined with wet sand containing an inner pot which can be glazed to prevent penetration by the liquid within which the food is placed. It can extend the useful life of fruits and vegetables. Removing the cloth is the equivalent of leaving the refrigerator door open. Zeer potinpot refrigerator higher humidity results this is a design dating back to as early as 2500 b. Several modifications based on the zeer pot design concept have been made and experiments carried out. Reusable silicone mold suitable for various uses such as. Heat and mass transfer analysis of a claypot refrigerator. One simple solution is to build your own pot in pot fridge, using basic pots, sand and water. Shelflife with and without zeer pot refrigerator 2 zeer pot construction a zeer is constructed by placing a smaller clay pot into a larger clay pot. The potinpot refrigerator works off the evaporation of the water, cooling the system, and the conduction of the heat away from the inner pot to the water and sediment.
Cooling through evaporation is an ancient method of lowering temperature. The potinpot refrigerator, also known as a zeer in arabic, is a food cooling device. The design of the potinpot refrigerator is a very simple one. For example, compare filling the outer pot with water vs. It uses a porous outer earthenware pot, lined with wet sand, contains an inner pot which can be glazed to prevent penetration by the liquid within which the food is placed the evaporation of the outer liquid draws heat from the inner pot. A pot in pot cooler is an affordable electricityfree refrigerator which uses the latent heat of vaporization of water to maintain a low temperature inside an inner compartment. Pdf thermal analysis of clay pot in pot refrigerator.
Obviously thats not enough, so in this weeks episode of hit or myth, we set out to test whether or not you can use your instant pot. How to build a pot in pot clay refrigerator or zeer afropedea. It uses a porous outer earthenware pot lined with wet sand containing an inner pot which can be glazed to prevent penetration by the liquid within which the food is placed. Pdf heat and mass transfer analysis of a claypot refrigerator. Where t1 is the temperature at the center of inner pot and tamb is the ambient temperature. Thus, by trying to optimize this setup by manipulating certain variables covered in. The remainder of the document discusses other clay based technologies that may be of interest. A potinpot refrigerator will cool food down by evaporative cooling. On the other hand, the instant pot has a 22page user manual, which doesnt include any. Make sure that the pan will not hide any other important consumables within your refrigerator. In all cases pot in pot refrigerator is kept for natural convection. I dont understand what the sand does in this situation. Fridge for the poor 2 executive summary mobah rural horizons, producer of the potinpot products which is widely termed as the fridge for the poor is based in kano, nigeria. Plug the hole in the bottom of each pot with a bit of clay or.
Zeer pot build your own electricityfree refrigerator. Heat transfer and evaporative cooling in the function of potinpot. This instant pot chicken piccata is dredged in flavored flour, seared, then cooked and smothered in a lemon caper sauce with butter. This video is part of a series prepared by a team featuring our 2009 exxonmobil green. The simple claypot refrigerator is ideally suited for preserving vegetarian foods in hot and dry climates. This time the inside of the pot in pot was definitely cooler than the air outside.
Its inspiration came from a growing need to keep food fresh longer in the small communities of thirdworld countries that have little to no electricity. As the water evaporates it cools the inside, letting food stored in the inner pot to be kept fresh for some time. Potinpot refrigerator is a refrigeration device which uses evaporative cooling and works without consuming electricity. The fridge is composed by two pots of clay, of the same shape but of different sizes, placed one inside the other. For the assumed respiratory cooling load, the preservation temperature is predicted. The simple clay pot refrigerator is ideally suited for preserving vegetarian foods in hot and dry climates. In this paper, steadystate performance of a clay pot refrigerator which works on the evaporative cooling principle, is analysed using reynolds flow model of convective heatmass transfer. As the water evaporates from the sand, it lowers the temperature inside the inner pot, similar to how evaporation from a sweaty person lowers the persons body temperature. Within the document, pages 15 to 19 outline in detail how to make a pot in pot refrigerator. The principle behind the clay pot in pot refrigerator is evaporative cooling. One such experiment was conducted using a tin pot placed inside a larger clay pot by kamaldeen.
He put the soup in the fridge, in the pot and gave me some for work today. The potinpot refrigerator also known as the zeer was invented in 1995 by nigerian teacher mohammed bah abba. A potinpot refrigerator, clay pot cooler or zeer arabic. Azeer pot, also known as a pot inpot refrigerator, is a simple system composed of two terracota pots, some sand and some water that can maintain a cool temperature to preserver fruits and veggies. In this paper, steadystate performance of the refrigerator is analysed using reynolds flow model of convective heatmass transfer. When we replicated the experiment we used unglazed clay flower pots. Food is placed inside the pot that is in the interior, covered with a lid or a humid piece of cloth. May 08, 2016 the refrigerator is also known as the zeer pot in arabic you can try many different vegetables and fruit to see how long you are able to keep them in the pot. The clay pot cooler is a simple and cheap way to keep food fresh notably vegetables and fruits. Instant pot freezer meals are a great way to save time and make easy dinners.
From nigeria the potinpot a refrigerator that runs without electricity designed in 1995 by mohammed bah abba, a professor in nigeria, the potinpot cooling system helps farmers by reducing food spoilage and waste, increasing their income and limiting the health hazards of decaying foods. Alternative manuals are available based on the experience of movement e. Tender thin pieces of chicken, seared, and slathered in a buttery lemon caper sauce are absolutely fantastic. Trending price is based on prices over last 90 days. In a zeer pot, water is retained in the voids present in sand poured between two.
Potinpot refrigerator simple english wikipedia, the. How to build a pot in pot clay refrigerator or zeer. Therefore, the heat in the inner pot is most efficiently conducted away from the inner pot. Pdf heat and mass transfer analysis of a potinpot refrigerator. Aug 12, 2018 instant pot freezer meals are a great way to save time and make easy dinners.