A new technology for waste heat utilization of exhaust gas from power plant boilers is presented. By means of refrigeration technology with partially opened self-regulating gravitational heat pipes and solid adsorbents

it is possible to recover the waste heat of exhaust gas

realizing directly central refrigerating and central heating. In such a case

the system structure is simple

having reliable per-formance

convenience to maintenance

and low capital investiment

enabling the temperature of exhaust gas from boiler to be greatly lowered

and energy-saving effect to be remarkable.