Sink & source offers has introduced a unique refrigeration technology. This refrigeration technology that works with steam or hot oil. This technology isit is based on heat instead of electricity, having compressor in vapour compression refrigeration [vcr] system is replaced by thermal compressor. Because of extremely low maintenance and power requirement, along with versatile operation [above zero or sub-zero] this system is very much suitable for small and medium sized businesses and industries. Working of this system is given by: this thermal composer is composed made of an absorber. A solution pump, the generator and rectifier. Water is added into a cycle to assist suction and discharge of refrigerant by cooling and heating and refrigerant is ammonia so sub zero temperature is also possible. This system has no does not have any complicated maintenance-prone machinery like mechanical compressor, big sized motor, mcc panel, etc. And only has a pump of very small size consuming only 10% of power of mechanical chiller. Moreover, it can be operated as chiller [+5?] and brine plant [subzero temperature] by increasing the temperature of heat input with almost same plant capacity unlike mechanical chillers whose capacity reduces by 50% if converted from chilled water to brine plant.