## Abbreviations  
\begin{tabular}{l l} Nomenclature & \\ \(A\) & Area, m\({}^{2}\) \\ \(c\) & Specific heat, J kg\({}^{-1}\) K\({}^{-1}\) \\ \(C\) & Latent heat, J kg\({}^{-1}\) \\ \(d\) & Diameter, m \\ \(E\) & Energy consumption, J \\ \(EER\) & Energy efficiency ratio \\ \(E_{kg}\) & Average energy consumption of precooling 1 kg of litchi, kJ kg\({}^{-1}\) \\ \(E_{tal}\) & Power consumption of charging and precooling, J \\ \(h\) & Heat transfer coefficient, W m\({}^{-2}\) K\({}^{-1}\) \\ \(l\) & Length, m \\ \(m\) & Weight, kg \\ \(n\) & Number of precooling batches of litchi \\ \(N_{0}\) & Theoretical energy consumption, W \\ \(p\) & Heat load, W \\ \(P_{0}\) & Refrigerating capacity of refrigeration system, W \\ \(q\) & Heat load per unit area, W m\({}^{-2}\) \\ \(q_{0}\) & Refrigeration capacity per unit mass, kJ kg\({}^{-1}\) \\ \(q_{l}\) & Density of heat flow rate, W m\({}^{-2}\) \\ \(q_{m}\) & Mass flow, kg s\({}^{-1}\) \\ \(q_{V}\) & Refrigeration capacity per unit volume, kJ m\({}^{-3}\) \\ \(Q\) & Quantity of heat, J \\ \(Q_{max}\) & The maximum TES capacity of TES tank, J \\ \(Q_{chr}\) & TES capacity of charging, J \\ \(r\) & Radius, m \\ \(R\) & Heat conduction resistance, m\({}^{2}\) K W\({}^{-1}\) \\ \end{tabular}  
\begin{tabular}{l l} \(t\) & Time, s or h \\ \(T\) & Temperature, \({}^{\circ}\)C \\ \(TES\) & Thermal energy storage, J \\ \(u\) & Precooling rate, kg h\({}^{-1}\) \\ \(v_{in}\) & Inspiratory specific volume, m\({}^{3}\) kg\({}^{-1}\) \\ \(V_{R}\) & Volume flow rate, m\({}^{3}\) s\({}^{-1}\) \\ \(V_{th}\) & Theoretical gas transfer volume, m\({}^{3}\) \\ \(w_{0}\) & Unit theoretical work, kJ kg\({}^{-1}\) \\ \(\Delta\)T & Temperature difference, \({}^{\circ}\)C \\ Greek symbols & \\ \(\alpha\) & Power coefficient of water pump \\ \(\beta\) & Volumetric efficiency of compressor \\ \(\lambda\) & Thermal conductivity, W m\({}^{-1}\) K\({}^{-1}\) \\ \(\delta\) & Thickness, m \\ \(\rho\) & Density, kg m\({}^{-3}\) \\ Subscripts & \\ \(amb\) & Ambient \\ \(chr\) & Charging \\ \(cic\) & The contact surface between the ice and coil \\ \(coi\) & Evaporation coil \\ \(com\) & Comprehensive \\ \(con\) & Condenser \\ \(ctp\) & The end of charging to the end of precooling \\ \(cup\) & Circulating water pipe \\ \(eff\) & Effective TES \\ \(eli\) & Energy lost through insulation \\ \(eva\) & Evaporator \\ \(itw\) & Initial temperature of water \\ \(itl\) & Initial temperature of lithi \\ \(iw\) & Ice and water \\ \(ilt\) & Insulation layer of TES tank \\ \(ils\) & Insulation layer of spray precooling box \\ \(ilc\) & Insulation layer of circulating water pipe \\ \(isc\) & Inner surface of coil \\ \(iic\) & Inner surface of insulation layer of circulating water pipe \\ \(lit\) & Litchi \\ \(load\) & Load of lithi precooling \\ \(lod\) & Cooling loss rate caused by opening the door \\ \(oic\) & Outer surface of insulation layer of circulating water pipe \\ \(osc\) & Outer surface of coil \\ \(osi\) & Outer surface of ice \\ \(op\) & Operation of water pump \\ \(siw\) & Contact surface between insulation layer and water \\ \(spr\) & Spray precooling \\ \(spb\) & Spray precooling box \\ \(src\) & Contact surface between refrigerant and coil \\ \(spa\) & Contact surface between spray precooling box and air \\ \(sta\) & Contact surface between TES tank and air \\ \(tal\) & Total \\ \(thb\) & Thermal bridge \\ \(tst\) & TES tank \\ \(ttl\) & Termination temperature of lithi precooling \\ \(ttw\) & Termination precooling temperature of water \\ \(wat\) & Water \\ \end{tabular}