Vapour Absorbtion Refrigeration
International Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 National Conference on Emerging Trends in Engineering & Technology (VNCET-30 Mar’12)
Theoretical and Experimental Evaluation of Vapour Absorption Refrigeration System
V.D.Patel*a, A.J.Chaudhari*, R.D.Jilte*
(Department of Mechanical Engineering)* Vidyavardhini’s College of Engineering and Technology, Vasai (W), Dist: Thane, Pin: 401 202, (M.S.), INDIA. e-maila: v_patel@rediffmail.com
ABSTRACT
The vapour absorption system uses heat energy, instead of mechanical energy as in vapour compression system, in order to change the condition of the refrigerant required for the operation of the refrigeration cycle. In this system, the compressor is replaced by an absorber, a pump, a generator, and a pressure reducing valve. This complete papers discuss about the theoretical calculations are made of different components of the systems like evaporator, absorber, condenser and pump of vapour absorption system for a capacity of 0.25TR and experimentally developed and run system to validated for reducing the temperature for the free of cost of operation.
Keywords: Absorption, absorber, NH3, VAR, VCR. I. INTRODUCTION
In the vapour absorption refrigeration (VAR) system, a physicochemical process replaces the mechanical pro-cess of the vapour compression refrigeration (VCR) sys-tem by using energy in the form of heat rather than mechanical work. The main advantage of this system lies in the possibility of utilizing waste heat energy from industrial plants or other sources and solar energy as the energy input. The VAR systems have many favourable characteristics. Typically a much smaller electrical input is required to drive the solution pump, compared to the power requirements of the compressor in the VCR systems, also, fewer moving parts means lower noise levels, higher reliability, and improved durability in the VAR systems [1–5]. A Robur Servel ACD-3600 gas-fired system was
Theoretical and Experimental Evaluation of Vapour Absorption Refrigeration System
V.D.Patel*a, A.J.Chaudhari*, R.D.Jilte*
(Department of Mechanical Engineering)* Vidyavardhini’s College of Engineering and Technology, Vasai (W), Dist: Thane, Pin: 401 202, (M.S.), INDIA. e-maila: v_patel@rediffmail.com
ABSTRACT
The vapour absorption system uses heat energy, instead of mechanical energy as in vapour compression system, in order to change the condition of the refrigerant required for the operation of the refrigeration cycle. In this system, the compressor is replaced by an absorber, a pump, a generator, and a pressure reducing valve. This complete papers discuss about the theoretical calculations are made of different components of the systems like evaporator, absorber, condenser and pump of vapour absorption system for a capacity of 0.25TR and experimentally developed and run system to validated for reducing the temperature for the free of cost of operation.
Keywords: Absorption, absorber, NH3, VAR, VCR. I. INTRODUCTION
In the vapour absorption refrigeration (VAR) system, a physicochemical process replaces the mechanical pro-cess of the vapour compression refrigeration (VCR) sys-tem by using energy in the form of heat rather than mechanical work. The main advantage of this system lies in the possibility of utilizing waste heat energy from industrial plants or other sources and solar energy as the energy input. The VAR systems have many favourable characteristics. Typically a much smaller electrical input is required to drive the solution pump, compared to the power requirements of the compressor in the VCR systems, also, fewer moving parts means lower noise levels, higher reliability, and improved durability in the VAR systems [1–5]. A Robur Servel ACD-3600 gas-fired system was
References: [1] Dossat RJ. Principles of refrigeration. 2nd ed. New York: John Wiley and Sons; 1981. [2] Haseler LE, et al. A design study for absorption cycle heat pumps for domestic heating. Report no. G1157 UK: Engg. Sci. Div., AERE Harwell; 1978a. [3] Haseler LE, et al. Absorption cycle heat pumps for domestic heating. Report no. G1049 UK: Engg. Sci. Div.,AERE Harwell; 1978b. [4] Horuz I. An experimental study of the vapour absorption refrigeration in road transport vehicles. PhD thesis, Mech. Engg. Dept., Univ. of Strathclyde, Glasgow, UK 1994. [5] Yamankaradeniz R, Horuz I, Coskun S. Refrigeration techniques and applications. Bursa Turkey: Vipas¸ A. S¸; 2002. V. RESULTS AND CALCULATION Fig.3 Time–Temperature curve for vapour absorption refrigeration system. Vidyavardhini’s College of Engineering and Technology, Vasai Page 131