CASE STUDIES
Perfect for people and perishables
An award-winning farm shop and café in rural Staff ordshire is reaping the benefi ts of installing a Daikin VRV IV heat pump air conditioning system and self-cleaning Roundfl ow cassettes – resulting in a greater comfort level for customers and staff , and an ideal environment for its fresh produce.
I
n less than 10 years, Denstone Hall Farm Shop and Café, in the village of Denstone, has grown from a minor agricultural diversifi cation project to a major commercial success. A fi rm focus on quality local produce, including beef from the home farm has earned a string of awards for owners Rupert and Emma Evans.
With business expanding exponentially, the Evans’ took the step to move to larger premises, progressing to a 600m2
converted barn in late 2013. Rebuilt
to appropriate regulations and standards, the enlarged shop is four times the size of its predecessor – which brought with it some unforeseen problems. Rupert Evans says: “We did not include air conditioning in our plans for the new shop and café – we did not think it would be necessary. But, during the summer of 2014, it became very clear that we had to think again. “Customers and staff were complaining about the heat, and it was having a serious impact on our vegetables and other fresh produce. In addition, we now had a lot more refrigeration equipment – especially in the butchery and deli areas – pushing out heat. We also have large windows on the east side, overlooking the river, so there’s substantial solar gain to counteract.” Daikin D1 installer, Intercool Systems of Staff ord was commissioned to install the new system and director Mike Walsh said that from an installer’s point of view the project was slightly complicated by diffi culties in calculating thermal requirements: “It’s basically a large room with diff erent cooling and heating loads in various areas. We did an overall calculation, but relied on over 20 years of experience on previous projects, and an understanding of customer requirements and performance expectations to determine the right set-points for each zone.”
Two modular condensing units, totalling 30hp, were installed to serve eight cassettes, each delivering a nominal 11.2kW of cooling or 12.5kW of heating.
58 August 2016
Overall effi ciency of the system is enhanced by the provision of Passive Infrared Sensors (PIR) sensors and individual energy-featured controllers for each Roundfl ow cassette. The PIR presence sensor is an optional refi nement, which adjusts the set point to within 1°C of standard when no one is detected in the immediate area, and automatically directs airfl ow away from any person to avoid draughts when they are detected. Daikin’s unique Roundfl ow cassette has a 360° air discharge, ensuring uniform airfl ow and temperature distribution. Fitted with the automatic daily fi lter cleaner, the Roundfl ow cassette achieves up to 50% energy savings as it avoids accumulations of dust that impede airfl ow through the unit. Speaking of the installed Daikin VRV IV air-conditioning system Rupert Evans said: “We chose the Daikin system for two main reasons: it’s economical on electricity and we liked the clean design of the cassettes – we wanted something that would blend in and not be an eyesore in the open ceiling areas. The system has been fantastic so far and it has certainly eliminated the problems we had.”
Kit list Code
RYMQ12T RYMQ18T
Description
VRV IV condensing unit VRV IV condensing unit
FXFQ100A Roundfl ow cassette
BYCQ140DG Self-cleaning decoration panel BRYQ140A PIR sensor for Roundfl ow cassette BRC1E52A
No of units 1 1
8 8 8
Premium controller with energy features 8
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