Αποτελέσματα Αναζήτησης
Heat exchangers are a fundamental tool in the thermal engineering fields, such as refrigera-tion, power systems cooling, electronics cooling, and air conditioning. Enhanced heat transfer (EHT) techniques provide:
1 Σεπ 2018 · Thermal Science and Engineering Progress. Aircraft air conditioning heat exchangers and atmospheric fouling. Aircraft gas turbine start, lube oil is burnt, and oil vapour fouls other aircraft. Foulant debris is naturally occurring and from aircraft op’s (inc. vehicle op’s).
26 Απρ 2017 · Heat exchangers in a typical aircraft air conditioning (ACS) pack—a typical single-pass, cross-flow, plate fin heat exchanger. Heat exchangers are compact generally when the heat transfer area per unit volume is >700 m 2 /m 3 .
All air cycle air conditioning systems use at least one ram air heat exchanger and an air cycle machine with expansion turbine to remove heat energy from the bleed air, but variations exist. An example of a system different from that described above is found on the McDonnell Douglas DC-10.
26 Νοε 2018 · The present study investigates the feasibility of using heat pump technology for oil cooling to provide temperature lift as a means to reduce the air–oil heat exchanger surface area, which should offset the effect of adding the heat pump components mass and the compressor power consumption.
25 Ιουν 2018 · This study compares the performance of conventionally-built plate-fin air–liquid crossflow heat exchangers (i.e., aircraft oil coolers) to additively manufactured heat exchangers of similar geometry.
1 Ιαν 2020 · A new type of helicopter air conditioning system with LOS heat pump is proposed. •. The system can recover the waste heat of the lube oil. •. The reversing valve can switch the modes of waste heat discharge or recovery. •. The simulation models are established to reveal system performance.
