ans rtation 201 1.400 0.600 5 m in No strips Number of stops Fig 9.6 Rate of heat extract from the van, averaged over the periods when the vehicle is moving, as a function of the number of stops the v Food temperature at loading('C) Fig 9.7 Heat extracted by the refrigeration plant during the standard journey when the food is loaded at different initial temperatures( source: Gigiel, 1998) ing temperature(and hence it has greater capacity) when reducing the tem- perature once the doors are closed and the vehicle starts moving again. The time during which the refrigeration plant can run remains the same as the number of drops increases and therefore the rate of heat extractio increases approximately linearly with the number of stops. 9.3.4.5 Initial food temperature The heat extracted by the refrigeration system is 4 times greater if the food is loaded at 7C than if it is loaded at 0C (Fig. 9.7). In the case predicted,ing temperature (and hence it has greater capacity) when reducing the tem￾perature once the doors are closed and the vehicle starts moving again. The time during which the refrigeration plant can run remains the same as the number of drops increases and therefore the rate of heat extraction increases approximately linearly with the number of stops. 9.3.4.5 Initial food temperature The heat extracted by the refrigeration system is 4 times greater if the food is loaded at 7 °C than if it is loaded at 0°C (Fig. 9.7). In the case predicted, Transportation 201 1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 0 10 20 30 40 Number of stops Heat extracted (J) 5 m in No strips 5 m in strips 10 m in No strips 10 m in strips Fig. 9.6 Rate of heat extract from the van, averaged over the periods when the vehicle is moving, as a function of the number of stops the van makes (source: Gigiel, 1998). 0 5 10 15 60 50 40 30 20 10 0 Food temperature at loading (°C) Heat extracted (J) Fig. 9.7 Heat extracted by the refrigeration plant during the standard journey when the food is loaded at different initial temperatures (source: Gigiel, 1998)