How to calculate the energy savings from RTO with heat recovery?

How to Calculate the Energy Savings from RTO with Heat Recovery?

Regenerative Thermal Oxidizers (RTOs) with Heat Recovery are widely used in various industries to control air pollution by destroying organic pollutants. However, one of the significant advantages of RTOs is that they can recover a significant amount of energy that can be utilized in various processes. In this article, we will discuss how to calculate the energy savings from RTOs with heat recovery.

Understanding RTO with Heat Recovery

Definition of RTO with Heat Recovery
How does RTO with Heat Recovery work?
Components of RTO with Heat Recovery

An RTO with heat recovery is an air pollution control system that oxidizes organic pollutants in the exhaust air stream. The system consists of two or three ceramic beds filled with heat exchange media. The media helps to recover heat from the exhaust gases and transfer it to the incoming process air stream. The recovered heat can be utilized in various processes such as preheating incoming process air or water.

Calculating the Heat Recovery Efficiency

Definition of Heat Recovery Efficiency
Factors affecting Heat Recovery Efficiency
Methods to calculate Heat Recovery Efficiency

The heat recovery efficiency of an RTO with heat recovery is the ratio of the heat energy recovered to the heat energy available in the exhaust gases. The factors that affect the heat recovery efficiency include the inlet and outlet temperatures, the flow rate of exhaust gases and incoming process air, and the specific heat capacity of the gases and air.

The heat recovery efficiency can be calculated using various methods such as the enthalpy method, the temperature method, and the effectiveness method. The choice of the method depends on the available data and the accuracy required.

Calculating the Energy Savings

Definition of Energy Savings
Factors affecting Energy Savings
Methods to calculate Energy Savings

The energy savings from an RTO with heat recovery is the difference between the energy consumed by the RTO and the energy recovered by the heat exchanger. The factors that affect the energy savings include the inlet and outlet temperatures, the flow rate of exhaust gases and incoming process air, and the specific heat capacity of the gases and air.

The energy savings can be calculated using the heat recovery efficiency and the heat energy available in the exhaust gases. The calculation can be done using the following formula:

Energy Savings = (Heat Energy Available – Energy Consumed) x Heat Recovery Efficiency

Case Study: Energy Savings from an RTO with Heat Recovery

Overview of the Case Study
Data Collection
Calculations
Results and Analysis

Let us consider a case study where an RTO with heat recovery is installed in a manufacturing plant. The RTO consumes 500 kW of energy, and the exhaust gases have a flow rate of 10,000 Nm³/hr and an inlet temperature of 300°C. The incoming process air has a flow rate of 5,000 Nm³/hr and an inlet temperature of 25°C. The specific heat capacity of the gases and air is 0.24 kJ/Nm³°C and 1.005 kJ/Nm³°C, respectively.

Using the enthalpy method, we can calculate the heat recovery efficiency as 84%. The heat energy available in the exhaust gases is 2,232,000 kJ/hr. Hence, the energy savings from the RTO with heat recovery is:

Energy Savings = (2,232,000 – 500,000) x 0.84 = 1,455,600 kJ/hr

This energy can be utilized in various processes such as preheating incoming air, saving energy costs, and reducing greenhouse gas emissions.

Conclusion

RTOs with heat recovery are an efficient way of controlling air pollution and recovering energy. Calculating the energy savings from RTOs with heat recovery is essential in determining the system’s efficiency and the potential cost savings. The calculation involves understanding the system’s components, calculating the heat recovery efficiency, and then calculating the energy savings. By understanding the calculation methods, one can optimize the RTO with heat recovery’s performance and enhance its benefits.

We are a high-tech enterprise that specializes in comprehensive treatment of volatile organic compounds waste gas and carbon reduction and energy-saving technology for high-end equipment manufacturing. Our core technical team comes from the Aerospace Liquid Rocket Engine Research Institute (Aerospace Sixth Institute), where we have more than 60 R&D technicians, including 3 senior engineers at the researcher level and 16 senior engineers. We showcase four core technologies: thermal energy, combustion, sealing, and automatic control. We have the ability to simulate temperature fields and air flow field simulation modeling and calculation, test the performance of ceramic thermal storage materials, select molecular sieve adsorption materials, and experimentally test the high-temperature incineration and oxidation characteristics of VOCs organic matter. The company has built an RTO technology research and development center and an exhaust gas carbon reduction engineering technology center in the ancient city of Xi’an, and a 30,000m² production base in Yangling. The production and sales volume of RTO equipment is far ahead in the world.

Our Research and Development Platforms

High-efficiency combustion control technology test platform: We have a cutting-edge combustion control technology test platform that allows us to simulate actual combustion environments and test and optimize combustion efficiency. This platform has helped us develop some of our most innovative technologies, including our advanced combustion system.
Molecular sieve adsorption efficiency test platform: Our molecular sieve adsorption efficiency test platform allows us to test and optimize the performance of our adsorption materials, ensuring that they are highly effective at capturing volatile organic compounds.
High-efficiency ceramic heat storage technology test platform: Our ceramic heat storage technology test platform allows us to test and optimize our thermal storage materials, ensuring that they efficiently store heat for future use. This technology has been instrumental in the development of our RTO equipment.
Ultra-high temperature waste heat recovery test platform: Our ultra-high temperature waste heat recovery test platform allows us to test and optimize waste heat recovery efficiency, ensuring that we can capture and repurpose as much waste heat as possible.
Gaseous fluid sealing technology test Platform: Our gaseous fluid sealing technology test platform allows us to test and optimize the sealing performance of our equipment, ensuring that there is no leakage and no pollution.

Our Patents and Honors

We have filed a total of 68 patents for our core technologies, including 21 invention patents, 41 utility model patents, 6 design patents, and 7 software copyright registrations. Our patented technologies cover a wide range of areas, including key components of our equipment. We are proud to have already been granted 4 invention patents and 41 utility model patents.

Our Production Capabilities

Steel plate and profile automatic shot blasting and painting production line: Our automated shot blasting and painting line ensures that our equipment is of the highest quality and meets all relevant standards.
Manual shot blasting production line: Our manual shot blasting line is used for smaller equipment and parts, allowing us to produce high-quality equipment at scale.
Dust removal and environmental protection equipment: We have a range of dust removal and environmental protection equipment that ensures that we meet all relevant environmental standards.
Automatic painting room: Our automatic painting room allows us to apply high-quality paint to our equipment efficiently and without any defects.
Drying room: Our drying room ensures that our equipment is fully dried and ready for use before it leaves our facility.

If you are looking for a partner to help you with VOCs waste gas treatment, carbon reduction, and energy-saving technology, look no further than our company. We pride ourselves on our cutting-edge research and development platforms, patented technologies, and top-of-the-line production capabilities. Here are just a few of the advantages of working with us:

Expertise: Our team includes some of the most experienced and knowledgeable professionals in the industry.
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