How to choose a suitable mold temperature machine

Calculation method for selecting mold temperature machine
1. Special circumstances require calculation:
        A. Find heater power or refrigeration power KW=W × △t × C × S/860 × T
        W=Mold weight or cooling water KG
        T=temperature difference between the required temperature and the starting temperature.
        C=Specific heat oil (0.5), steel (0.11), water (1), plastic (0.45-0.55)
        B. Find the size of the pump
        Need to understand the pump flow and pressure (head) required by the customer
        P (pressure Kg/cm2)=0.1 × H (Head M) ×α (Specific gravity of heat transfer medium, water=1, oil=0.7-0.9)
        L (media required flow rate L/min)=Q (mold required heat Kcal/H)/C (media ratio hot water=1 oil=0.45) × T (temperature difference between circulating media entering and exiting the mold) ×α× sixty

2. Refrigerator capacity selection
        A. Q (freezing capacity Kcal/H)=Q1+Q2
        Q1 (Heat brought into the mold by raw materials in Kcal/H)=W (Weight of raw materials injected into the mold in KG per hour) × C × （T1-T2） × S (safety factor 1.5-2)
        The temperature of T1 raw material in the tube; Temperature of T2 finished product when taking out the mold
        Heat generated by Q2 hot runner Kcal/H
        B. Quick calculation method (not applicable with hot runner)
        1RT=7-8 OZ1OZ=28.3g (including safety factor)
        1RT=3024Kcal/H=12000BTU/H=3.751KW
        1KW=860 Kcal/H1 Kcal=3.97BTU

3. Cooling water tower selection=A+B
        A. For injection molding machine
        Cooling water tower RT=Ejector horsepower (HP) × 0.75KW × 860Kcal × 0.4÷3024
        B. For refrigerators
        Cooling water tower RT=chiller cooling capacity (HP) × one point two five