Air Conditioning System Drive by Engine Exhaust Heat

2017 ◽  
Vol 4 (2) ◽  
pp. 97
Author(s):  
Bhanu Pratap ◽  
Sandeep Kamboj ◽  
Yogendra Singh
Keyword(s):  
Air Conditioning ◽  
Engine Exhaust ◽  
Air Conditioning System ◽  
Exhaust Heat

The Design and Rating of the Pressure Exchange Steam Ejector for a Waste Heat Driven Automotive Air Conditioning System

2009 ◽  
Author(s):  
David M. Gould ◽  
Charles A. Garris
Keyword(s):  
Heat Transfer ◽  
Air Conditioning ◽  
Waste Heat ◽  
Exhaust System ◽  
Minimum Condition ◽  
Engine Exhaust ◽  
Air Conditioning System ◽  
Automotive Air Conditioning ◽  
Exhaust Heat ◽  
Pressure Exchange

A pressure exchange ejector invented by George Washington University’s Professor Charles Garris has been considered a novel concept for energy conversion and utilization of two working fluids. One of the applications of the pressure exchange ejector involves taking the captured waste heat from the car’s engine to assist in running its air conditioning system. This study involves implementing the pressure exchange ejector in a modified vapor compression air conditioning system and determining its feasibility with performance and sizing for a typical midsize sedan. The specific midsize sedan chosen in the analysis is the inline six-cylinder BMW 530i sedan. The analysis involves comparing previous results and data of high and low cooling loads from the conventional automotive air conditioning (A/C) system using R-134a refrigerant with a new steam pressure exchange ejector A/C system. The pressure exchange (PE) ejector similar to the conventional ejector can be represented by the turbomachinery analog. Desirable theoretically efficiencies of the PE ejector using the turbomachinery analog are varied to determine the minimal efficiency required to run the ejector air conditioning system. The performances of the ideal and minimum condition for the PE ejector A/C system are determined to view the potential and feasibility of the system. The system consists of environmentally friendly steam as a refrigerant and replaces the conventional A/C system’s engine driven compressor with an ejector and a second loop for waste heat recovery from the car’s engine exhaust system. Simulation tests of varying ejector efficiency under the designed A/C system and vehicle conditions are conducted through computational heat transfer and thermodynamic analysis using MATLAB/Simulink. The software is a numerical calculation and visualization software program where various environmental, thermodynamic, heat transfer, and sizing conditions can be monitored. Engine exhaust heat and conventional air conditioning results and properties are obtained through previous experiments and analysis at respected universities and laboratories.

Recovery of Automobile Engine Exhaust Energy

2008 ◽  
Author(s):  
Willem Jansen ◽  
Arnold M. Heitmann ◽  
Masanori Hanawa
Keyword(s):  
Air Conditioning ◽  
Fuel Efficiency ◽  
Electric Energy ◽  
Engine Exhaust ◽  
Automobile Engine ◽  
Improve Fuel Efficiency ◽  
Exhaust Heat ◽  
Exhaust Energy

This paper describes a method for converting car engine exhaust heat into useable electric energy that can be used either to improve fuel efficiency by as much as 10 percent, or for powering an air-cycle type Air Conditioning (A/C) system. The concept is based on designs that are currently used to construct air-cycle A/C systems.

ANALYSIS OF COMPETING VARIANTS OF AIR CONDITIONING SYSTEMS WITHOUT AIR EXTRACTION FROM ENGINES AT THE STAGE OF PASSENGER AIRCRAFT ONBOARD SYSTEMS CONCEPTUAL DESIGN

2019 ◽  
Vol 6 (3) ◽  
pp. 80-85
Author(s):  
Denis Igorevich Smagin ◽  
Konstantin Igorevich Starostin ◽  
Roman Sergeevich Savelyev ◽  
Anatoly Anatolyevich Satin ◽  
Anastasiya Romanovna Neveshkina ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Air Conditioning ◽  
Research University ◽  
Cooling System ◽  
Fuel Efficiency ◽  
Air Cooling ◽  
Moscow Aviation Institute ◽  
Air Conditioning System ◽  
Low Efficiency ◽  
Air Conditioning Systems

One of the ways to achieve safety and comfort is to improve on-board air conditioning systems.The use of air cooling machine determines the air pressure high level at the point of selection from the aircraft engine compressor. Because of the aircraft operation in different modes and especially in the modes of small gas engines, deliberately high stages of selection have to be used for ensuring proper operation of the refrigeration machine in the modes of the aircraft small gas engines. Into force of this, most modes of aircraft operation have to throttle the pressure of the selected stage of selection, which, together with the low efficiency of the air cycle cooling system, makes the currently used air conditioning systems energy inefficient.A key feature of the architecture without air extraction from the main engines compressors is the use of electric drive compressors as a source of compressed air.A comparative analysis of competing variants of on-board air conditioning system without air extraction from engines for longrange aircraft projects was performed at the Moscow Aviation Institute (National Research University).The article deals with the main approaches to the decision-making process on the appearance of a promising aircraft on-board air conditioning system at the stage of its conceptual design and formulated the basic requirements for the structure of a complex criterion at different life cycle stages.The level of technical and technological risk, together with a larger installation weight, will require significant costs for development, testing, debugging and subsequent implementation, but at the same time on-board air conditioning system scheme without air extraction from the engines will achieve a significant increase in fuel efficiency at the level of the entire aircraft.

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