Transport refrigeration system with a thermal management system

A transport refrigeration system comprising:

• a refrigeration circuit comprising a compressor for compressing a refrigerant, a high pressure side heat exchanger arranged on a high pressure side of the compressor for removing heat from the refrigerant, and a low pressure side heat exchanger arranged on a low pressure side of the compressor for heating the refrigerant;
• and
• a thermal management system comprising:
• a high pressure side fluid circuit comprising a first pump for circulating a working fluid around the high pressure side fluid circuit, and a first component heat exchanger for heating and/or cooling a first electronic component, wherein the high pressure side fluid circuit is arranged in a heat exchange relationship with the refrigeration circuit via the high pressure side heat exchanger for heating the working fluid within the high pressure side fluid circuit;
• a low pressure side fluid circuit comprising a second pump for circulating the working fluid around the low pressure side fluid circuit, and a second component heat exchanger for cooling a second electronic component via convection, wherein the low pressure side fluid circuit is arranged in a heat exchange relationship with the refrigeration circuit via the low pressure side heat exchanger for cooling the working fluid within the low pressure side fluid circuit;
• and
• a pressure compensation system comprising an expansion tank configured to absorb excess pressure in the thermal management system resulting from thermal expansion of the working fluid.