Emission of Refrigerant R-134a from Mobile Air-Conditioning Systems
ثبت نشده
چکیده
منابع مشابه
How to Considerably Reduce Greenhouse Gas Emissions Due to Mobile Air Conditioners
SUMMARY This paper is one input to respond the Council request of 10 October 2000 to " study and prepare measures in reduction of all greenhouse gas emissions from air conditioning in vehicles ". Greenhouse gas emissions due to mobile air conditioning are significant and growing fast in the European Union. The European Commission estimates that the emission will be between 31 and 53 Mt CO 2 eq ...
متن کاملComparison between HFC-134a and Alternative Refrigerants in Mobile Air Conditioners using the GREEN-MAC-LCCP© Model
The transition from CFC-12 (GWP=10,900) to HFC-134a (GWP=1,430) in the 1990’s in new vehicle air conditioners eliminated the contribution to ozone depletion potential (ODP) from new vehicles and reduced the direct Global Warming Potential (GWP) by over 80%. One proposed alternative is HFC-1234yf (GWP=4). Despite the phase-in success of HFC-134a as a zero ODP automotive refrigerant it is still a...
متن کاملExperimental Analysis of an Automotive Air Conditioning System With Two-Phase Flow Measurements
A fully equipped automotive air-conditioning test system consists of 5 main components: a compressor, a condenser, an orifice tube, an evaporator and an accumulator. R-134a is used as refrigerant. The coefficient of performance, evaporator cooling capacity, compressor power consumption, total mass flow rate, vapor mass flow rate, liquid mass flow rate and oil in circulation, pressures and tempe...
متن کاملFast Refrigerant Property Calculations Using Interpolation-Based Methods
An interpolation-based method for computing refrigerant properties which can be used in simulations of vaporcompression air-conditioning equipment is presented. This method uses bicubic functions to interpolate between samples of the Helmholtz energy surface as a function of temperature and density. Three beneficial characteristics of this method are discussed: speed, accuracy, and consistency,...
متن کاملFuzzy Modeling and Identification of Vapor Compression Elements of Aif Conditioning System for Integrated Fuzzy Model
Conventional control techniques are not able to accomplish the stable cooling in vapor compression air conditioning system. This paper describes the fuzzy models of refrigerating compressor, expansion valve, evaporator and condenser as basic elements of vapor compression air conditioning system. Compressor speed, delivery pressure, refrigerant flow rate, valve opening area, pressure difference ...
متن کامل