Centers and business centers
Modern shopping and entertainment multifunctional complexes, which include shops, restaurants, cinemas, etc. regardless of their size, they are distinguished by high energy consumption, given their needs for electricity, heat and cold supply (air conditioning).
Air conditioning systems account for a large share in the total electric capacity of the mall.
Features of the mall :
- The need for constant air conditioning in warm weather and space heating in cold weather.
- In some cases, heating and air conditioning systems are forced to work at the same time.
- The ability to create a common, unified climate ventilation system.
- A high share of electricity in the total cost of the daily operation of the facility.
- High costs of connecting to networks.
- Frequent need to equip your own boiler room.
Taking into account the peculiarities of shopping and entertainment centers, a significant reduction in costs can be achieved through the construction of a mini-CHP based on INNIO Jenbacher gas engines with cogeneration or trigeneration technology.
How it works?
Trigeneration is a combined production of electricity, heat and cold. From a technological point of view, this refers to the connection of a cogeneration unit with an absorption cooling unit (ABCM). The source of heat energy for the ABCM is a by-product of the cogeneration unit - heat from the cooling system and exhaust gases.
Let's imagine a mall with a mini-CHP:
- Electric power of 4.5 MW (3 Fitting JENBACHER J piston 420 GS 1.5 MW e )
- thermal power 6 MW (gas piston units of 1.5 MW t + hot water boiler 2.1 MW t )
- cold power 6 MW (ABHM 2 MW x and vapor compression chillers 5 MW x ).
In winter, all heat power is used for heating, ventilation and hot water supply. In summer, only 1.5 MW of heat is needed to meet the needs of the shopping and entertainment center. Accordingly, the excess heat energy of 2.4 MW is sent to the ABHM, we get (2.4 x 0.7) 1.68 MW of cold for air conditioning the complex.
Considering that we get cold from waste heat, the mall reduces electricity consumption, because we do not need to get cold on compression chillers.
Benefits and Features
- The presence of its own generation provides cheap electricity, saves on connecting to the local external network, because only reserve power is needed, to avoid losses of electricity at transformer substations, to avoid the costs of laying power lines and installing additional equipment.
- Due to the utilization of heat from the mini-CHP, there is no need to build a boiler house at its full declared capacity. Only a peak boiler house is required, a single gas pipeline is used to supply gas for the entire power unit, which is located in one building.
- An alternative to industrial air conditioners, which significantly increase the power consumption of shopping and entertainment centers, are absorption chillers that generate cold. The use of waste heat from the mini CHP plant provides relatively cheap cooling.
- By using exhaust gases to generate usable energy, we reduce our emissions. In addition, unlike traditional technologies for generating cold, where ammonia and freons act as refrigerants, ABCM uses water as a refrigerant, which also minimizes the environmental load.
- The features of the use of ABHM include higher capital investments, larger dimensions and weight. This is important to consider when creating a project.
Of course, the main condition for the successful operation of an energy center with trigeneration is a professional approach to the concept, design and implementation of the project.
The KTS Engineering team is ready to assist in the implementation of projects of power centers with trigeneration, using the best world practices and international experience of JENBACHER.
JENBACHER power plants - your energy independence.