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02-fireandice-zeer cooler
- 1. Fire and Ice Evaporative Cooling
- 2. Zeer cooler Evaporative Cooling “Zeer cooler” Sweating clay jar
- 3. Zeer cooler 17-Dec 2014 (1,500.00) zeer jars Frame Outer jar Rat proof lid Drip tray Water Drip catchment Cotton cloth Evaporative Cooling “Zeer cooler”
- 4. Zeer cooler 17-Dec 2014 (1,500.00) zeer jars Water Drip catchment Evaporative Cooling “Zeer cooler” Add water daily Empty catchment daily
- 6. Movement e.V. - The clay pot cooler - Information on construction and usage www.movement-verein.org www.facebook.com/movementev peter.rinker@posteo.de 1 The clay pot cooler – an appropriate cooling technology Information on construction and usage 15. April 2014 Author: Peter Rinker Proofreading: Qasid Safeer Diagrams: Peter Rinker Photos: Peter Rinker, Franziska Angermaier, Faiçal Ouédraogo Key words: clay pot cooler, zeer pot cooler, desert fridge, evaporative cooling, conservation of food, appropriate technology, Burkina Faso Introduction The clay pot cooler is a simple and cheap way to keep food fresh (notably vegetables and fruits). The cooling function is based on the principle of evaporative cooling and is working best in hot and dry climates. These conditions are common in sub-Saharan Africa, where big parts of the population have no access to conventional, electrical refrigerators to keep their food fresh. In hot and dry climates (like northern Burkina Faso), with daily maximum air temperatures of 30 to 45°C this system of evaporative cooling enables to reach temperatures between 13 and 22°C inside the cooler. The clay pot cooler can extend the shelf life of food by three to four times. The objective of this document is to provide detailed information about the construction and utilization of the clay pot cooler as well as to highlight potential problems in order to support the dissemination of this appropriate technology. (The Information about temperatures or the mixture of materials for the production of clay pots are based on the experience of Peter Rinker (Movement e.V) in the very hot and dry northern part of Burkina Faso. Depending on regional differences in climate, availability of materials and pottery customs these information can deviate in different geographic contexts.) Figure 1: Two vendors of vegetables with a clay pot cooler at the market in Ouahigouya, Burkina Faso. Figure 2: Fresh vegetables stored in a clay pot cooler.
- 11. Vandy expects two versions of the box will go on sale at local markets this month: a small box with a capacity of 15kg priced at $7, and a larger box with up to 40kg capacity for $15. Cambodia
- 12. Wet bulb temperature is the lowest temperature to which air can be cooled by the evaporation of water into the air at a constant pressure. It is therefore measured by wrapping a wet wick around the bulb of a thermometer and the measured temperature corresponds to the wet bulb temperature https://www.engineeringtoolbox.com/dry-wet-bulb-dew-point-air-d_682.html
- 13. Evaporative cooling is limited by the current wet bulb temperature.
- 14. Dripline @ 1.2 liters/hour Sweating @ 1.2 liters/hour Filtering @ 1.2 liters/hour Drinking @ 1.2 liters/hour Stacked Elements?
- 15. Dripline @ 1.2 liters/hour Sweating @ 1.2 liters/hour Filtering @ 1.2 liters/hour Drinking @ 1.2 liters/hour Overflow to plants 🌳