A hybrid air handler cooling unit has a bi-modal heat exchanger. In a direct expansion mode or a pumped refrigerant economization mode, the bi-modal heat exchanger is in a refrigerant path in parallel with first and second condenser coils and functions as a condenser coil. In a mixed ...
A hybrid heat pump system is provided to use as a cooling and heating unit with one unit and to improve usability by performing a cooling, a heating, and a boiling with one unit. A hybrid heat pump system comprises a water boiling heat exchanger(100), a endothermic pipe(210), a endothe...
Thermophysical and rheological properties of unitary and hybrid nanofluids Hatice Mercan, ... Tolga Taner, in Advances in Nanofluid Heat Transfer, 2022 4.2.2 Specific heat capacity Specific heat capacity is defined as the heat which can increase one unit temperature of a mass unit of a substance...
The design of the layer pattern under multiple operating conditions is optimized using a hybrid PSO. The effectiveness of these models is verified by the optimization design of a 24-stream main heat exchanger in an air separation unit. Peng et al. have further supplemented their design algorithm...
Strain engineering of thermal conductivity in graphene sheets and nanoribbons: a demonstration of magic flexibility. Nanotechnology 22, 105705 (2011). Article Google Scholar Jia, Y. & Ju, Y. S. Solid-liquid hybrid thermal interfaces for low-contact pressure thermal switching. J. Heat Transf. ...
The invention relates to a triple-generation unit combining an air source, a waste water source and a heat pump. The unit comprises a compressor, a hot water side heat exchanger, a water source side heat-exchanging system, an air-conditioning side heat-exchanging system and a heat-exchanging...
Correspondingly, they result in large vertical heat fluxes with magnitude even comparable to air-sea heat fluxes13,18, leading to the possibility of significantly modulate the upper-layer heat budget of the Southern Ocean18,19,20. Fig. 1: Distributions of Rossby number and eddy heat flux in ...
New Hitachi air365 Hybrid system automatically switches between heat pump and furnace operation according to outdoor temperature sensors for a more efficient performance year-round IRVING, Texas, Sept. 13, 2023 /PRNewswire/ -- Johnson Contro...
In particular, air to oil HXs are often used to cool the oil that lubricates the internal rotating components of aeroengines. For this, HX is inserted in the front part of the aero-engine, typically on the fan-case, as expressed in Fig. 1 and must necessarily operate at high ...
It can also be seen that with chilled water- and air-cooling systems, the utilisation factors of waste heat are higher in A2 than in B2. The annual COPs of the DCHP are higher in scenario A2, especially with the chilled water-cooling system. The reason for this is that higher production...