Heat pump
How a Heat Pump Works
A heat pump transfers heat from one place to another using three main components: a compressor, an evaporator, and a closed circuit filled with refrigerant. This process is similar to how a refrigerator works, but in reverse. That is why a heat pump is sometimes called an “inverted refrigerator.”
One of the key benefits of a heat pump is that the cycle can be reversed, allowing the system to also provide cooling when needed.
Efficient Energy Use
The efficiency of a heat pump is measured by the Coefficient of Performance (CoP). For example, a CoP of 4 means the system produces 4 kWh of heat for every 1 kWh of electricity it uses. The CoP depends on several factors, including the temperature of the heat source and the required output temperature for the greenhouse.
In horticulture, heat pumps are often used in combination with thermal energy storage in underground aquifers. This allows for efficient heating, even during colder periods.
The need for change
Dutch greenhouse horticulture is leading and efficient, but still heavily dependent on fossil fuels. As society rapidly becomes more sustainable, the sector faces a strategic choice: How can you reduce CO₂ emissions without losing profitability?
The government is increasing the pressure: greenhouse horticulture must be climate neutral by 2040, with a reduction of 4.3 megatons of CO₂ by 2030. The tax on gas is rising sharply – from €0.13 to €0.37 per m³ for the first 170,000 m³ between 2025 and 2030. Above that, the rate rises to €0.25 per m³.
Waiting is no longer an option
Every day of natural gas use means higher costs and a loss of flexibility and competitiveness.
Bosman Van Zaal supports growers in this transition. As a system integrator, we design complete, sustainable energy systems that combine technology with strategy.
The heat pump is an essential link in this.
Ambitious. Personal. Knowledgeable.
We create advanced systems that support the sustainable cultivation of food, flowers, and pharmaceuticals. With a global footprint and a clear focus on innovation, we aim to remain at the forefront of technical horticulture.
From our headquarters in Aalsmeer and 13 international locations, more than 300 engineers, technicians, and specialists deliver expertise and personal support to growers across the globe.
