Waste heat power generation boiler blockage and smoke and wind

What is the waste heat recovery efficiency of condensing boilers?

As the temperature of feedback water is generally not cold enough to serve as the cold source, the waste heat recovery efficiency of condensing boilers is limited. More advanced waste heat recovery systems are proposed. The common principle of them is to enhance the difference between the cold source and the flue gas.

How does a waste heat boiler work?

Waste heat boilers generate steam from medium-high temperature flue gas, and then the steam drives a turbine for power generation [8, 9]. The flue gas with a temperature of 480–600 °C enters the waste heat boiler, and then, the exhaust temperature drops to 80–180 °C [, , , , ].

How is waste heat used to generate power?

The most frequently used system for power generation from waste heat involves using the heat to generate steam, which then drives a steam turbine. A schematic of waste heat recovery with a Rankine cycle is shown in Figure 18.

How to generate power from industrial waste heat recovery?

Chan et al. (Chan et al., 2013) presented a review paper related to different approaches for generating power from industrial waste heat recovery such as chemical heat pumps, adsorption and absorption cycles for cooling and heating, ORC, supercritical Rankine cycle (SRC), and trilateral cycle, as well as the thermal energy storage systems.

Can industrial waste heat be used as a heat source?

Kwak et al. (Kwak et al., 2014) presented a modeling and design framework for using industrial waste heat as the heat source of different technologies such as ORC systems, boiler feed water heating, heat pumping, and absorption refrigeration. The main goal of this study was to present the accuracy of the suggested method for optimization.

Can a PCM-based power generation system reduce fluctuations in waste heat recovery?

Dal Magro et al. (Dal Magro et al., 2017) developed a power generation system based on coupling ORC and PCM-based technologies for increasing the efficiency of a waste recovery system. A schematic diagram of the suggested system is depicted in Fig. 7. The application of PCM-based technology can reduce fluctuations in waste heat recovery power.