Study on MnCl 2 /CaCl 2 –NH 3 two-stage solid sorption freezing cycle for refrigerated trucks at low engine load in summer

Gao, Peng; Zhang, X.F.; Wang, L.W.; Wang, R.Z.; Li, D.P.; Liang, Zhijian; Cai, Aofei

doi:10.1016/j.enconman.2015.11.055

Cited by 32 publications

(14 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such chemical heat pumps can be used for cooling applications [11,[15][16][17][18][19] and can be integrated into trigeneration (combined heating, cooling and power) systems [12]. Under certain operating conditions, chemical heat pumps can be more efficient and offer more attractive operation characteristics compared to compression heat pumps [11,12,20].…”

Section: Thermochemical Energy Storage and Heat Transformationmentioning

confidence: 99%

Multi-physical continuum models of thermochemical heat storage and transformation in porous media and powder beds—A review

et al. 2016

View full text Add to dashboard Cite

Section: Thermochemical Energy Storage and Heat Transformationmentioning

confidence: 99%

Multi-physical continuum models of thermochemical heat storage and transformation in porous media and powder beds—A review

et al. 2016

View full text Add to dashboard Cite

“…The required refrigerating temperature of refrigerated trucks generally ranges from -18 o C to 0 o C. In this paper, a refrigerated truck with a rated power of 80 kW is analyzed, and the cabin size is 4035×1935×1800 mm. The rated load capacity of this refrigerated truck is 1500 kg, and the required refrigerating capacity is shown in Table 1 (Gao et al, 2016a(Gao et al, , 2016b. (1) Sorption process of the HTS bed and desorption process of the MTS bed.…”

Section: System Descriptionmentioning

confidence: 99%

“…The researches mentioned above mostly focus on the adsorption air-conditioning system for which the refrigerating temperature is above 5 o C, so they are not suitable for refrigerated trucks. It is because the required refrigerating temperature of refrigerated trucks generally ranges from -18 o C to 0 o C. Based on the previous researches (Jiang et al, 2015;Wang et al, 2013), to make the sorption refrigeration cycle suitable for refrigerated trucks, Gao et al (2016aGao et al ( , 2016b proposed and established a MnCl 2 /CaCl 2 -NH 3 two-stage solid sorption freezing system driven directly by the exhaust gas, and composite sorbents of MnCl 2 and CaCl 2 developed by the expanded natural graphite treated with sulphuric acid (ENG-TSA)…”

Section: Introductionmentioning

confidence: 99%

Optimization and performance experiments of a MnCl2/CaCl2–NH3 two-stage solid sorption freezing system for a refrigerated truck

Gao

Wang

et al. 2016

International Journal of Refrigeration

Self Cite

View full text Add to dashboard Cite

Based on the earlier-established MnCl 2 /CaCl 2-NH 3 two-stage solid sorption freezing system for a refrigerated truck, a series of optimization designs are conducted in this prototype system. For sorption beds consisting of many unit tubes, the arrangement mode is changed to the staggered arrangement. Off-the-shelf heat exchangers from refrigeration industries are chosen as the evaporator and the condenser, and an expansion valve is also used. The total mass of the optimized system is reduced to approximately 150 kg. Firstly, different refrigerating temperatures ranging from-25 o C to 0 o C are investigated, and experimental results show the optimized system can easily satisfy requirement even for transporting frozen goods. The earlier-established system can only satisfy requirement for transporting fresh goods. Simultaneously, the cycle time can be reduced to 45 min. Through the optimization, both the refrigerating capacity and the total mass of the system can satisfy requirement of this refrigerated truck.

show abstract

“…Experiments showed that the desorption temperature of the machine decreased from 98 C to 75 C at a condensing temperature of 30 C, and meanwhile the sorption temperature increased from 16 C to 43 C at an evaporating temperature of À20 C. Such a machine provided a novel way of adapting to the low desorption temperature and the high sorption temperature. After that, Jiang et al [19] compared different working pairs of CaCl 2 /NaBr-NH 3 , CaCl 2 /BaCl 2 -NH 3 , SrCl 2 / BaCl 2 -NH 3 and SrCl 2 /NH 4 Cl-NH 3 for heat source temperatures below 100 C and the cooling temperatures of approximately 30 C. Then, Gao et al [20] proposed a novel working pair of MnCl 2 /CaCl 2 -NH 3 for utilizing the exhaust gas of the refrigerated truck, particularly for the low engine load condition in summer, and the results showed that the cycle could satisfy the critical operating conditions.…”

Section: Introductionmentioning

confidence: 98%

Experimental investigation of a MnCl2/CaCl2-NH3 two-stage solid sorption freezing system for a refrigerated truck

Gao

Wang

et al. 2016

Energy

Self Cite

View full text Add to dashboard Cite

a b s t r a c tA MnCl 2 /CaCl 2 -NH 3 two-stage solid sorption freezing system consisting of a MnCl 2 sorption bed, a CaCl 2 sorption bed, an evaporator and a condenser is established for a refrigerated truck, for which the required refrigerating capacity is 1.13 kW at a refrigerating temperature of À5 C. Composite adsorbents of MnCl 2 and CaCl 2 developed by expanded natural graphite treated with sulfuric acid are utilized. The sorption/desorption process and the resorption process are coupled in the two-stage cycle. The experimental results show that the maximum refrigerating capacity of 1.25 kW and COP (coefficient of performance) of 0.143 are obtained at a resorption time of 120 min when the hot air and refrigerating temperatures are 230 C and À5 C, respectively. In addition, the refrigerating capacity of 1.19 kW is achieved even when the hot air temperature is as low as 210 C, and such a result can satisfy the requirement for transporting fresh goods. The refrigerating capacity is 1.32 kW when the hot air and refrigerating temperatures are 270 C and À10 C, respectively, and the data are higher than the required refrigerating capacity. However, for refrigerating temperatures of À15 C and À18 C, the refrigerating capacity experimentally obtained could meet the requirement only when a truck is utilized for longdistance transportation.

show abstract

Study on MnCl 2 /CaCl 2 –NH 3 two-stage solid sorption freezing cycle for refrigerated trucks at low engine load in summer

Cited by 32 publications

References 34 publications

Multi-physical continuum models of thermochemical heat storage and transformation in porous media and powder beds—A review

Multi-physical continuum models of thermochemical heat storage and transformation in porous media and powder beds—A review

Optimization and performance experiments of a MnCl2/CaCl2–NH3 two-stage solid sorption freezing system for a refrigerated truck

Experimental investigation of a MnCl2/CaCl2-NH3 two-stage solid sorption freezing system for a refrigerated truck

Contact Info

Product

Resources

About