Decent staff facilities.
Peak summer and yearly external temperatures:.the design temperature the external heat rejection equipment must be rated to, typically there will also be an additional allowance for recirculation for multi-unit installations (usually validated by an external CFD based on extreme temperatures and wind conditions)..
In an ideal scenario, the peak summer design temperature would be lower than the required supply air/water temperature in the data hall.This allows the data centre to rely solely on the heat rejection plant and no chillers - minimising energy consumption and resulting in low PUE values.PUE is dependent upon whether the heat rejection plant operates using adiabatic cooling..
However, for most data centres, peak summer temperatures exceed the required supply temperature.This necessitates mechanical cooling to maintain design conditions.
The larger the temperature difference, the harder the mechanical cooling system must work.
Compared to free cooling, mechanical cooling requires substantial electrical input, which ultimately contributes to more heat being rejected.The Prison Estate Transformation Programme (PETP) was a programme of 10,000 ‘new for old’ adult prison places across six sites (plus one new house block) at an estimated value £1.3 billion.
The full PETP programme was retired and superseded by a new programme, but, at the time, it provided an opportunity to develop a new type of prison environment using a platform based Design for Manufacture and Assembly (DfMA) approach – one whose core purpose was to increase the likelihood of rehabilitation and reduce re-offending rates.This was used in the design of the two prisons being delivered under PETP (HMP Five Wells at Wellingborough and at Glen Parva) and formed the basis for the current capacity programme.
It would do this by:.Putting safety, security and rehabilitation at the heart of prisons.