Authorized Service · TSE Service Competence Certified · ISO 9001 · OHSAuthorized Service · Serving all 81 provinces of TürkiyeServing all of Türkiye0312 261 07 24info@yoimuhendislik.com.tr
Chiller and hydronic equipment in a plant room

Adsorption chillers: cooling with waste heat and solar energy

Maintenance, repair, installation and projects for adsorption chillers that produce chilled water from low-temperature waste heat, solar collectors or CHP heat.

In shortAn adsorption chiller uses a solid adsorbent such as silica gel or zeolite and water as the refrigerant instead of a compressor. It is driven by heat and can run on low-temperature hot water, typically about 55–90 °C, which makes it suitable for turning waste heat, solar heat or small CHP heat into cooling.

How it works

Two adsorbent beds work alternately: one adsorbs water vapour from the evaporator under vacuum, producing chilled water, while the other is heated to release its vapour, which condenses in the condenser. Electricity is only used for pumps and valves.

Adsorption vs absorption vs compressor chillers

  • Adsorption: low-temperature hot water, silica gel/zeolite and water, lower COP, small to medium capacity.
  • Absorption: higher-temperature water, steam or exhaust gas, lithium bromide and water, medium to large capacity. See trigeneration.
  • Compressor: electricity, any scale, high electrical COP.

Maintenance, repair, installation and projects

  • Scheduled maintenance: condenser and evaporator cleaning, compressor and oil checks, pressure and temperature measurements, safety device tests, measured report.
  • Fault diagnosis and repair: not reaching set temperature, slow pull-down, high/low pressure alarms, compressor failure, leaks, control and sensor faults.
  • Installation and projects: load calculation, system and refrigerant selection, compressor and heat exchanger selection, installation, commissioning and documentation.
  • Retrofit and modernisation: conversion to new refrigerants, compressor overhaul, control upgrades, energy efficiency improvements.

We work brand-independent; refrigerant handling is done by F-gas certified technicians.

Our base is in Ankara Etimesgut. We work daily in Ankara and on a project and contract basis across Türkiye. Türkçe sayfa.

Frequently asked questions

Which brands do you service?

We work brand-independent, using the nameplate, circuit diagram and fault records for diagnosis.

Do you work outside Ankara?

Yes. We are based in Ankara and work across Türkiye on a project, contract and scheduled service basis.

Do you also design and install new systems?

Yes. We calculate loads, select the system and refrigerant, install and commission.

Get a quote for your adsorption chillers system

Site survey, measured diagnosis and a written quote. Based in Ankara, working across Türkiye.

Contact us

Get a quote, we reply the same day

Briefly describe your equipment and needs and one of our engineers will call you. One contact for breakdowns, maintenance, contracts and new equipment.

Authorized ServiceTSE Service Competence CertificateSince 2009

Quick quote form

The form is sent as a WhatsApp message.

For a detailed request, use our quote form.