Single-phase Sky Air inverter units delivers high COPs and EERs

Daikin Europe has added a single-phase 6 hp model to its Sky Air range of heat-pump comfort inverters. The RZQS140 can be used with a wide selection of Daikin ceiling-suspended, ceiling-concealed, ceiling cassettes and wall-mounted indoor fan-coil units. Key features include reduced refrigerant charge, COP of 3.3, EER of 3.0 and a maximum piping length of 50 m. The use of Daikin’s highly efficient scroll compressor provides easier control of superheat. These compressors are very efficient in the most frequently used mid to low settings. Maximum power consumption is controlled by the I-demand function by minimising the difference between actual power and predetermined power consumption. Forward-curved Aero spiral blade fans reduce pressure loss, turbulence and noise. The Super Aero grille also contributes to improving COP by reducing the power consumption of the fan without reducing airflow rates. Although primarily designed for heat-pump operation, these units can be converted to cooling only via a setting that disables the heating mode.
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Grenfell is the building industry's Piper Alpha says CIBSE

The recent passage of the Building Safety Act is a welcome recognition of the fact that making safe buildings is a highly skilled operation says the Chartered Institution of Building Services Engineers, endorsing the need for more effective regulation and a profound change in culture.

Underlying project-starts uptick indicates gradual recovery, Glenigan data suggests

  • 13% rise in detailed planning approvals against the preceding three months
  • 18% decline in main contract awards against the previous year
  • 9% increase in underlying starts during the three months to May

Glenigan has released the June 2022 edition of its Construction Review.