Hotels, hospitals and nursing homes consume huge amounts of energy. Programmes are used to keep consumption under control, and energy efficiency is the top priority when it comes to investment decisions. But energy conservation, which affects both the ecobalance and the income statement, starts much earlier than that:
- Only use devices in high energy-efficiency classes.
- Install solar panels which provide energy to heat water.
- Check the building insulation.
If it is time to replace the heating system or if a higher heating output is required, it is worth looking at combined heat and power (CHP) and the option of a CHP plant.
What is combined heat and power?
A CHP plant generates power and heat at the same time: the waste heat that is produced when generating power is used on site and without loss for heating rooms and
In this way, the primary energy is used multiple times. The energy efficiency and overall efficiency increase – in many cases to over 100%.
A CHP plant can therefore save 50% primary energy or more in comparison with a conventional heating solution without in-house power generation. This also reduces CO2 emissions.
And how does a CHP plant work?
An engine, for example, or a gas turbine drives a generator. The generator produces electrical power. The waste heat from the engine block or the gas turbine is transferred to coolant or oil and is then used to heat the heating and service water via a heat exchanger. Steam for process heat can also be generated in this way.
Functional principle of cogeneration in a CHP plant for using the primary energy in two ways: an engine drives a generator, the waste heat is used as
The main components of a CHP plant are as follows:
- Petrol engine or gas turbine
- Generator to produce power
- Heat exchanger to recover the heat energy
- Electrical switching and control equipment for power distribution
- Hydraulic equipment for heat distribution
Hoval offers standardised complete solutions which cover virtually every need and every possible application. The power spectrum ranges from 20-520 kW.
As the smallest standard model, the compact PowerBloc EG (20) natural gas CHP plant provides electrical power of up to 20 kW and thermal power of up to 43 kW. Its overall efficiency is 103.2%. The PowerBloc EG (20) is the ideal choice for medium-sized buildings such as hotels and schools as well as apartment buildings and commercial/industrial buildings.
The Hoval power spectrum goes up to 530 kW: the PowerBloc (520) CHP plant, for example, provides a maximum of 520 kW electrical power and max. 687 kW thermal power. It can be operated with natural gas or biogas and is intended for large buildings in particular.
Hoval offers advice to investors and planners and is happy to share expertise and experience. The focus is always on creating economical and ecological added value
for the customer.
As well as the actual investment costs, the assessment also includes the operating costs in order to make the total cost of ownership transparent. The Hoval specialists use the company's own SystemCalculator system consultation software for the assessment in order to find the right solution based on the figures for the case in question.
Some countries (such as Germany) support the installation of CHP plants with subsidies.
Hoval stays on course until everything has been planned, implemented and put into operation: Click here to read about why the Panorama Royal wellness hotel in Bad Häring, Austria, decided to purchase a CHP plant.