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Chinese name: heat pump English name: heat pump Definition 1: from low-temperature heat source heat sent to the high-temperature heat source of the circulating equipment. Definition 2: A device that transfers heat energy from a low-temperature heat source to a high-temperature heat source to compensate for the consumption of a part of low-grade energy (mechanical energy, electric energy or high-temperature heat energy). Its essence is to lower the quality of a certain amount of work, to provide lower-grade and more energy. Because heat pumps convert low-temperature thermal energy into high-temperature thermal energy and improve energy efficiency, it is an important way to recover low-temperature waste heat and utilize energy stored in environmental media (groundwater, surface water, soil and outdoor air, etc.). Subject: Resources Technology (a subject); Energy Resources (two subjects)
Commonly used distance measurement methods include tape measure distance and photoelectric distance measurement. The measuring distance of a tape measure is measured along the ground using a tape-like ruler that can be rolled up, which is a direct measuring distance. Photoelectric ranging is to use an instrument to transmit and receive modulated light waves between two points, and measure the distance according to its propagation speed and time. It belongs to electronic physical ranging. Photoelectric ranging is indirect ranging.
Inch Tape Measure,Tape Ruler Measurements,Length Tape Measure,1 Inch In Tape Measure
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