Blog
Articles on heat pumps, chillers and cooling technology.
Heat pump electricity consumption: how much power does it use?
How much electricity does a heat pump use? We explain COP and SCOP, the effect of outdoor and leaving water temperature, and a worked example with clearly stated assumptions.
Solar energy with a heat pump: panels, collectors and timing
PV panels make the heat pump's electricity, collectors make heat for hot water. Sizing the panels, using the sunny hours well and connecting collectors to HİDRA.
Concrete cooling: chillers, ice and cooling pipes for mass concrete
Hydration heat cracks thick pours. How chilled mixing water and ice lower the placing temperature, how embedded pipes cool the core, and how to size the chiller.
Heat pump drying: how fruit, vegetables and nuts are dried
Drying in a closed loop, at low temperature and with controlled humidity: why it protects product quality, how capacity is sized and how a dryer's heat pump module is designed.
Heat pumps on ships and boats: seawater-source systems
Seawater is a heat source whose temperature barely changes through the day. How is a heat pump connected on board, how is heat distributed to cabins, and why do space and vibration matter?
Chiller selection: capacity calculation, water temperature and key factors
Capacity from flow and temperature difference, leaving water temperature, glycol, N+1 redundancy and the installation site: the questions to answer, in order, when choosing a chiller.
History of the chiller: from the ice trade to today's water chillers
From the 1806 ice shipments to Carrier's 1902 air conditioning system and his 1922 centrifugal machine: how the chiller became today's inverter-controlled, low-GWP unit.
Injection moulding machine cooling: the right water for mould and oil
Mould water sets cycle time and part quality; oil cooling keeps the machine stable. Which circuit gets which water, and how to size the chiller.
What is a heat pump and how does it work? Cycle, COP and uses
A heat pump does not burn fuel to make heat; it takes heat from the outdoor air and moves it indoors. The four steps of the cycle, why 1 kW of electricity gives several kW of heat, and more.
Heat pump types: air, ground and water source systems
Heat pumps differ by where they take heat from and how they deliver it. We compare air, ground and water source systems, monobloc and split designs, and hybrid solutions.
Choosing a heat pump: what to check before you buy
The right heat pump is chosen for the climate, the heat loss and the water temperature of the heating system. The Poyraz, Boran, Vaha and Ayaz series, indoor units and what a quote needs.
Heat pump FAQ: frequently asked questions and answers
The 14 questions we hear most about heat pumps: cold climates, capacity, radiators and underfloor heating, hot water, electricity use, solar energy, noise and installation space.
Heat pump applications: where are heat pumps used?
Heat pumps are used from homes and greenhouses to factory waste heat, pools and ships. What sets the capacity in each application, and which product fits where?
Pool heating heat pump: sizing by surface, cover and season
A pool's heat demand depends more on its surface, cover and season than on its volume. A first heat-up calculation for a 70 m³ pool shows how capacity is chosen.
Heat pump vs chiller: same cycle, different job
A chiller makes chilled water, a heat pump makes heat. Design temperatures, efficiency measures, heat recovery, and which one to choose from homes to factories.
What is a cooling tower? Types and where they are used
A cooling tower evaporates a small share of the water to cool the rest below the outdoor air temperature. Its parts, open and closed-circuit types, airflow layouts and how it differs from a chiller.
Cooling tower selection: heat load, approach and wet-bulb temperature
Tower selection starts with four values: heat load, flow rate, water temperatures and the site's wet-bulb temperature. A 500 kW example works out the flow, make-up water and blowdown.
Cold room selection: temperature, panel thickness and capacity
A cold room is chosen by the temperature the product needs; panels, floor, door and refrigeration unit follow from it. With a worked product load and hot water from condenser heat.
Air conditioner or heat pump? Which is right for heating a home
A split air conditioner is a heat pump too; the difference is how it distributes heat. The two compared on comfort, hot water, cold-weather capacity and running costs.
Is a heat pump noisy? Sound levels, dB(A) and placement
Placement matters as much as the unit. How to read dB(A) figures, what distance and walls do, and where to put the outdoor unit, with the sound levels of AD models.
Environmental impact of heat pumps: CO₂, electricity and refrigerants
A heat pump's impact depends on where its electricity comes from, how efficient it is and its refrigerant. A worked CO₂ example and an R290, R32, R410A comparison.
A brief history of the heat pump: from Carnot to inverters and R290
The heat pump's story: a theory in 1824, a working system at a saltworks in the 1850s, a heated city hall in Zürich in 1938, and the inverter and R290 units of today.
Absorption heat pump: a heat-driven cycle and where it is used
How an absorption heat pump runs on heat instead of a compressor, which working pairs it uses, and when it makes more sense than an electric heat pump.