29 October 2024
|
Daikin Applied UK has followed up last year’s launch of its TZ D air cooled chillers with the addition of a glycol-free option.
Going glycol free can improve heat transfer efficiency and, therefore, performance while also reducing running costs. While glycol is useful in applications where freezing is a concern, it can be an environmental or health hazard due to its toxicity and can degrade over time which causes reliability problems. Choosing a glycol-free option can also be a regulatory requirement in some regions and for sensitive environments like food processing, pharmaceutical manufacturing or data centres.
Daikin Applied has developed a “closed loop” system that delivers an efficient solution for applications where avoiding the use of glycol is preferred. It is the latest addition to the company’s TZ D air-cooled free cooling chiller range which employs the latest technology to deliver top performance across a wide range of capacities from 180-2150kW.
These free-cooling products are a popular solution for comfort, process and critical cooling applications where the outdoor ambient conditions are between –20°C up to +55°C and supply water temperature is –12°C up to +30°C.
The new EWFH/S/D-TZ D models are designed with a fully integrated free cooling system and the controls enable free cooling operation when the outdoor air temperature is low enough to cool the fluid returning from the system to the chiller.
The range is available with a choice of three refrigerants: R1234ze, R513A and R134a and in four efficiency levels based around its single screw compressor design.
The chiller also benefits from the use of one or two independent refrigerant circuits and each compressor is equipped with a variable frequency drive (VFD) which is said to offer greater reliability whatever the outside conditions and adjusts the operating patterns to closely match demand.
Remote monitoring is available directly from the unit controller via the Daikin on Site (DOS) cloud-based tool. This provides real-time data as well as historical performance so operators can make any necessary adjustments to maintain optimum performance and any problems can be dealt with before they become serious.
The chillers can also be integrated into a modular system comprising up to eight separate units operated together by Daikin Applied’s Intelligent Chiller Manager (iCM) feature.
