We design and build testing systems to your specific requirements in the field of environmental simulation and cooling technology. From a simple, economical solution to a fully automated system — mechanical design, construction and PLC control included.
We specialise in environmental-simulation systems that require cooling, heating or humidification — for both air and liquids. Whether you need a simple, economical design or a fully automated unit, we deliver a complete package built around your application: mechanical design, construction and the implementation of the control system (PLC).
Typical systems we manufacture include:
An upgrade of a standard refrigerated container that originally ran only in deep-freeze mode. We added technology enabling temperature tests up to +50 °C and relative-humidity control at 80 %, greatly increasing the chamber's versatility and usefulness.
A glycol conditioning unit with a temperature range of −45 °C to +145 °C and adjustable flow up to 2 500 l/h with ±10 l/h precision.
A walk-in climatic chamber of roughly 40 m³, +20 to +45 °C, with humidity held at 15–30 % r.h., used for conditioning samples.
The customer places the sample inside the insulation box and feeds the cable harnesses through openings in the wall. Closing the door activates a safety interlock that allows the test to start; opening the door pauses the test so the operator cannot be injured.
A Weiss climatic chamber with a special frame for easy sample handling, plus power supply and electrical-quantity measurement.
A unit for conditioning a glycol mixture with a flow up to 15 l/h across a temperature range of −40 °C to +130 °C.
You tell us what you need — by form, email or phone.
We clarify your requirements and the timeline together.
We prepare a clearly structured price offer.
You confirm the order and we reserve a production slot.
We create a 3D design; once you approve it, manufacturing begins.
We test the equipment before dispatch (unless it is built on site).
We arrange transport, commission the equipment on site and train your staff.
We continue to support you with service, maintenance and calibration after handover.
We'll be happy to advise you.
Lukáš Lédl
Head of Service
Examples of the systems we build, with typical technical parameters.
Walk-in temperature and climatic chambers for stability tests and temperature cycling.
Units for cooling and heating liquids with precise flow regulation.
Conversion of a cooling container into a climatic test chamber.
JD Dvořák, s.r.o., Toužimská 897, block E3, 199 00 Praha 18
„The testing chamber, and the staff's approach and willingness beyond requirements — I can only recommend them.“
„JD Dvořák — a company where the impossible does not exist and where it is not only about work. I am glad to have the honour of working with JD Dvořák.“
„We have worked with JD Dvořák for a long time in testing, the rental of climatic chambers, and the service and calibration of our equipment. We value the helpfulness and professionalism of the department heads and technicians we are in regular contact with during tests and the work carried out. Our technicians also make use of training in various areas of testing, which provides both an expansion of theoretical knowledge and practical demonstrations.“
„What I greatly appreciate is the personal approach to solving every problem. Whether it concerned specific testing requirements or the need for individual consultation, I was always met with willingness and expert help that led to a smooth and efficient collaboration. For me, JD Dvořák is not only a professional company, but also an excellent partner in research and education.“
„We have worked with JD Dvořák since 2020. Since then we have completed several installations together, and throughout they have provided service and the necessary calibrations, always at the highest professional level. They have also helped us with our special requirements and we can always rely on them. Their approach is not only professional and customer-oriented, but also very human, and the cooperation is always pleasant.“
„Cooperation with JD Dvořák is at an excellent level, as proven by more than 20 years of trouble-free collaboration.“
„You do good work — thank you for the long-term cooperation.“
„Thank you for the professional cooperation so far. You are a very reliable partner for us.“
We deliver a complete tailor-made solution — from the initial design, through construction and manufacturing, to the implementation of the control system (e.g. PLC). The result is a device built exactly to your technical requirements.
They are chillers that form part of a closed cooling circuit. They dissipate heat from laboratory and production equipment and keep the process at a stable temperature.
Yes. We provide service support, regular maintenance and calibration of the equipment, so it stays reliable and accurate throughout its service life.
Yes. Using a Connection Remote Box we can monitor, control and diagnose the equipment remotely and upload PLC updates without travelling to your site.
Custom orders are always unique. Beyond that, we also offer standardised products based on projects we have already realised.
Yes. Every device we manufacture comes with a CE certificate and the related documentation, so it is ready for safe operation.
We don't manufacture these ourselves, but we are happy to collaborate on the design and FEM analysis and arrange production through our verified suppliers.
