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This historic heat pump heated the town hall for 63 years until 2001. Only then was it replaced by a new, more efficient heat pump. [14] 1945 John Sumner, City Electrical Engineer for Norwich, installs an experimental water-source heat pump fed central heating system, using a nearby river to heat new Council administrative buildings. It had a ...
An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction. ASHPs are the most common type of heat pump and, usually being smaller, tend to be used ...
The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.
Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller-based systems.
By using a double pump system together with variable and automatic control, the pump is able to decrease its energy consumption while increasing efficiency and reliability. [7] Using the pump's variable controls allows the pump to base its amount of energy consumption on how much it is actually performing, cutting down on usage during non-peak ...
August 2012: Pioneer officially launches the XDJ-AERO, Pioneer's first wireless DJ system that plays music from smartphones and tablets via Wi-Fi. April 2013: Pioneer officially launches the DJM-750. September 2014: Pioneer would sell its disc-jockey equipment business to private equity firm KKR for about 59 billion yen($550 million).
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