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Energy of My Business

Combined Heat and Power (CHP)

What is CHP?
CHP is the system in which electricity and thermal energy are generated simultaneously. CHP enables electricity and thermal energy to be generated where it is consumed. CHP systems restore the thermal energy that is lost while generating electricity to the system and provide energy conversion. In addition, the losses that occur during energy transmission are minimised. Thus, electricity can be generated with a single system, buildings can be heated, and hot water needs can be met. Thermal energy generated by cogeneration can be used in industrial facilities and other places where heat is used in the tertiary sector (steam, hot oil, etc.). Another name for cogeneration is "combined heat and power" technology. CHP means that the electricity and heating energy needed is generated from a single source.

What Are the Benefits of CHP?
Part of the electricity and heat energy is lost when it is transmitted to the places where it will be consumed. CHP systems, on the other hand, generate electricity and heat where it is consumed, and ensure that transmission and distribution losses are minimised. It not only prevents energy loss in distribution and transmission systems, but also eliminates the need for additional investment required in transmission and distribution systems. Moreover, CHP systems enable high efficiency production as they enable the conversion of waste heat into usable energy.

At the same time, CHP provides efficient and economical use of energy by meeting the electricity and heat needs from a single source (natural gas). It helps to prevent environmental pollution by reducing the carbon footprint of the facilities, and also reduces the external dependence of the facilities in energy supply.

Fossil fuels used for energy production in our world are getting more and more expensive every day. CHP systems provide savings and contribute to the environment by ensuring the use of energy at maximum efficiency.

What is Combined Cooling, Heat and Power (CCHP)?
CCHPis to add the benefit of "cooling" in addition to the cogeneration system that provides heat and electricity generation. CCHP systems generate electricity and heat energy in facilities as well as cold water for cooling systems. In other words, CCHP is the simultaneous production of electricity, heating and cooling energies by using a single energy source.

The CHP unit consists of a natural gas fired gas engine equipped with an alternator. While this engine generates electricity, it also releases heat. With the recovery of this heat, the CHP system is completed. Trigeneration system, on the other hand, is formed by adding thermal energy absorbing heat recovery system to the combined heat and power system (CHP). Thermal energy is recovered in the heating system partially, and the remnant is transferred to the cooling system by the absorption chiller. The absorption chillers use waste heat as an energy source instead of electricity.

What is the Difference Between CCHP and CHP?
The difference between CCHP and CHP is the cooling system included in the system. It is the use of converting the genereate heat for the cooling needs of the building or the production. CCHP systems provide savings and high energy efficiency for businesses that need seasonal or continuous cooling.

How Much Do CHP and CCHP Systems Save?
Gas turbines and engines that only generate electricity convert only 40% to 45% of the fuel they use into electricity and cause a great loss of energy as waste heat. CHP systems save 30-40% in fuel consumption by using this waste heat. In other words, a gas turbine or gas engine that generate only electricity converts only 40 - 45 percent of the energy input to electricity, while the efficiency reaches 80 - 90% in cogeneration systems. Efficiency reaches up to 95% in CCHP systems.

What Are the Fuels Used in CHP and CCHP Systems?
  • Fossil Fuels: Natural gas, LPG, LNG
  • Renewable Fuels: Biogas, Bio-diesel, Bio-mass
  • Waste heat
  • Solid wastes
  • Geothermal
According to 2012 European Central Bank data, natural gas is the most used fuel in cogeneration and trigeneration systems with a share of 49.5%.

Which Equipment Is Used in CHP Plants?
  • Gas Turbine / Steam Turbine / Internal Combustion Engine
  • Generator / Alternator
  • Waste Heat Recovery Unit
  • Absorption Chillers
Where & In Which Sectors Are CHP Systems Used?
CHP and CCHP systems can be applied to industrial facilities that constantly need heating and cooling, such as steam, hot water, hot gases / air, etc. The sectors, where CHP technology is the most efficient, are the manufacturing industry where electricity and heat consumption are high, stable and continuous throughout the day. CHP and trigeneration systems are also a valuable investment, for hospitals serving 7/24. It is of great importance that hospitals and hotels continue their heating, cooling and electrical energy consumption without interruption. Therefore, CHP and CCHP systems provide great advantages, savings, and efficiency in the energy cost of hospitals.
CHP and CCHP systems are used in;
  • Textile sector,
  • Food industry,
  • Plastic and packaging industries,
  • Paper industries,
  • Hospitals,
  • Hotels,
  • Schools,
  • Shopping Malls,
  • Airports and Aviation Service Buildings.
What are the Advantages of the CHP-CCHP System?
  1. It increases energy efficiency by generating energy where it is used.
  2. CHP provides 35-40% efficiency increase in electricity and heat generation compared to conventional (separate) power plants and boilers.
  3. It reduces CO2 emission as the waste heat released into the atmosphere is recycled and used in conventional systems. Therefore, it provides an environmentally friendly approach by reducing the carbon footprint of the facilities.
  4. CHP saves electricity and heating costs.
  5. The equipment used in cogeneration systems are durable and have low maintenance costs.
  6. The total energy costs of enterprises that install a CHP system, decrease drastically. CHP systems are installed without any disruption to the end product or service quality.
  7. With decreasing energy costs, the competitiveness of the facility / enterprise increases.
  8. CHP and CCHP systems provide assurance in energy supply and protect against power cuts and disruptions. It secures energy continuity.
  9. It does not cause sound pollution.
  10. CHP and CCHP systems have low operating costs. CHP and CCHP systems pay back investment costs in a short time. In short, it is a lucrative investment.

CHP-CCHP Installation in 7 Steps
1. Consumption Analysis
The customer’s energy bills are obtained and analysed. In these bills, the past consumption data of the customer are analysed in detail. Legislative regulations, by-laws and technological compliance, and other criteria are evaluated in this analysis. Enerjisa takes the responsibility of correct system sizing provided that the past consumption data is accurate. Theoretical design and conformity assessment for business model are carried out at this stage.

2. Site Survey
Enerjisa teams visit the facility and conduct detailed site survey. Electrical and mechanical infrastructure, field and space conformity, which technology and equipment to choose for CHP systems, how to integrate the existing system with the CHP system is all analysed.

3. Investment Analysis
The investment period is specified by calculating the return of investment and costs. Cost estimates, reimbursement plan, and repayment mechanism are set up at this stage.

4. Contract Signing Process
A long-term contract is signed between Enerjisa and the customer. The commitments of the customer and Enerjisa are specified in detail.

5. Procurement and Engineering Design
The equipment is selected and the method of procurement is determined, the engineering design of the project is prepared. Project planning is started to integrate the existing system into the CHP system.

6. Installation and Commissioning
Enerjisa's qualified workforce initiates installation, assembly and commissioning of the system. Throughout the contract period, the operational responsibility belongs to Enerjisa. It is the responsibility of Enerjisa to make the provisional acceptance of TEDAŞ and to activate the system.

7. Reporting, Monitoring and Maintenance Guaranteed Performance
All reporting, system monitoring and maintenance are undertaken by Enerjisa, without any additional charges and in a completely transparent manner. By means of analysis and monthly reports, customers are regularly informed about the benefits and savings rates of cogeneration or trigeneration systems.

Why Should You Install a CHP-CCHP System?
CHP or CCHP unit have many important benefits. The primary contribution of these systems is less energy (fuel) consumption for heating, cooling and electricity generation. CHP or CCHP unit minimise energy loss. Therefore, production costs are reduced compared to traditional methods where heating, cooling and electricity are generated separately and cause heat and energy loss. By ensuring that energy is consumed at the place where it is generated, losses while transmitting energy are prevented. A facility / enterprise that owns a CHP or CCHP unit can control and monitor the entire energy generation process.

Why Enerjisa?
Enerjisa CHP-CCHP implementation increases productivity and encourages sustainability while reducing energy consumption. CHP and CCHP systems contribute to the environment by reducing energy costs and greenhouse gas emissions. Enerjisa performs the installation of systems without interrupting the usual operating activities while alleviating the financial burden of the investment with its innovative financing approach.

  • Enerjisa aims for the system to be installed to operate at high efficiency.
  • Enerjisa finances the investment partially or wholly.
  • Enerjisa undertakes every stage of the project entirely.
  • Enerjisa offers comprehensive services such as pre-project report, fieldwork, detailed project design, procurement, installation, TEDAŞ acceptance, project management and consultancy services.
  • Enerjisa cogeneration - generation systems; guides customers to contribute to the reduction of air pollution and to serve nature and the future with reduced carbon emissions.
  • Enerjisa undertakes technical and financial risks.

CHP-CCHP Success Stories
1. Adana HiltonSA
The CHP project carried out by Hilton Adana and Enerjisa was commissioned in 2018. As a result of the project that started to save on the first day, Hilton Adana now generates electricity and heat energy itself and consumes in the most efficient way. Enerjisa continues to report savings and energy consumption every month. For instance, the CHP system installed for Hilton Adana in August 2020 saved 50% on the energy bill.

2. Sabancı University
Sabancı University carried out the CHP conversion in cooperation with Enerjisa. Sabancı University both generates electricity and generates heat energy with its CHP system. As a result of the project, energy losses in the energy costs of the campus were minimised. The hot air generated from the CHP plant is used for water heating, thus increasing the energy efficiency of the campus and saving money.

‘‘At Sabancı University, we continue our leadership in science and technology by using green energy. Enerjisa solutions strengthen, accelerate and facilitate the leadership of our university in energy usage.”

Rasim Karas - Secretary General, Sabancı University


FAQ About CHP-CCHP
1. What is the maximum power that can be installed in a CHP-CCHP system?
The maximum installed capacity is limited by the contractual power of the customer.
2. Will I not be affected by grid outage?
According to the regulation that the CHP is subject to, CHP plant may not be allowed to operate in idlemode in case of Grid outage. Working independently from the Grid (idle mode operation) is not possible as per the unlicensed electricity generation regulation.
3. In case of CCHP installation, is it necessary to have a high cooling demand also in winter?
No, there are different operating scenarios in CCHP for summer and winter periods. Full heating can be provided in winter and high cooling and low heating can be provided in summer. It is also possible to provide balanced heating and cooling throughout the year. Enerjisa CHP solutions offer customised design and operating options for the requirements of our customers.
4. Will we need qualified staff for maintenance and operation?
No. Throughout the contract period, Enerjisa provides the necessary qualified personnel support for maintenance and operation.
5. Will the existing infrastructure be removed?
No. CHP / trigeneration systems work integrated with the existing infrastructure of the enterprise. For this reason, no additional operation is necessary for the customer's existing heating / cooling infrastructure. Except for a short-term installation processes, no energy cuts or modifications are made at the final usage points of the customer.
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