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Your Home and Backyard
Published in Julie Kerr, Introduction to Energy and Climate, 2017
Another option is to install a tankless water heater. Tankless water heaters, also known as demand-type or instantaneous water heaters, provide hot water only as it is needed. They do not produce the standby energy losses associated with storage water heaters, which can save you money. As their name implies, tankless water heaters heat water directly without the use of a storage tank. When a hot water tap is turned on, cold water travels through a pipe into the unit. Either a gas burner or an electric element heats the water, delivering a constant supply of hot water. You do not need to wait for a storage tank to fill up with enough hot water. A tankless water heater’s output limits the flow rate, however.
Analysis of Crystallization Fouling Durability of Novel Heating Elements for Electric Water Heating
Published in Heat Transfer Engineering, 2022
Alexander Janzen, Eugeny Y. Kenig
All process parameters were recorded, including surface temperature, inlet and outlet temperature, electrical voltage, and electrical current. Furthermore, the electrical voltage and electrical current were used to determine the electrical resistance during the period of the test. A variable ratio transformer allowed precise adjustment of the electrical power at the surface. The tankless water heater was used to generate a constant inlet temperature. Furthermore, the electrical conductivity and pH value were measured, too. The core component of the experimental setup is the heating system. The heating device was designed in such a way that all used heating elements could be mounted as bare-wire and tubular heating elements. Moreover, it was also possible to mount the novel heating elements. After the fouling tests, the used tubes with the inserted soiled heating element were dismounted and replaced with a new one. The weight of every heating element was measured prior and subsequent to the execution of each test series. The fouling mass weight was determined based on the weight increase of the heating elements.
Financial feasibility of implementing an automated system to save the cold potable water that would be wasted at the beginning of a hot shower
Published in Urban Water Journal, 2022
Marcelo Dalmédico Ioris, Enedir Ghisi
The water that supplies the showers comes from the water tank located on the roof of each building. The water that comes from the water company fills a water tank located at ground level. Then, the water is pumped to the water tank located on the roof of each building. Each flat in the three residential buildings has a laundry room, where the tankless water heater is located. The heater is supplied, by gravity, with water from the water tank located on the roof. Figure 2 shows the condominiums where measurements were taken and the site location.
Observations of energy consumption and IEQ in a ‘Tiny House’
Published in Building Research & Information, 2020
Peak electric demands in the range of 2 kW were observed for the TH_2. The demand rate was driven by operation of the electric tankless DHW heater installed in the building. Although electric tankless water heaters eliminate standby losses and energy losses of hot water stranded in pipes and occupy less physical space, these types of DHW heaters increase electricity demand (Prijyanonda & Milward, 2005). If electric rates include a demand charge then the operation of an electric tankless water heater can be expensive.