28 PROJECT
The SAME Foundation completely renovated and equipped the Paediatric Ward ( Ward 3 ). It helped as an exceptional area to alleviate the pressure of over-capacity , reduce crossinfection and deliver exceptional healthcare to children in the community .
Allsteam Engineering was appointed to conduct the update and overhaul of three plant rooms at the hospital .
Calorifiers .
These are all steam driven and as Franco pointed out , “ steam is often used in facilities where a large amount of energy is required , and steam is an established energy generator . Steam is created in a boiler using either coal , gas or light fuel , and is burned to heat softened water to 140 ° C . Furthermore , in heating environments it is normal for pressure to be between 300 to 1 200 kPa .
“ So , the higher the pressure , the hotter the steam .”
In a hospital environment , steam is used in the laundry , kitchen equipment , hot water supply , central heating , HVAC and sterilisation – this all accounts for 75 % of energy consumption in the hospital .
Calorifiers mounted with condensate tanks .
The work done is as follows :
• There are four plant rooms , and each comprise two ( 2 ) by 1 000l hot water storage calorifiers and one ( 1 ) by central heating non storage calorifier with one ( 1 ) 1 200l jacketed condensate tank , for heat recovery , where cooled steam is collected and pumped back into the boiler house for energy recuperation .
• Plant room Three ( 3 ) supplies wards 10 to 15 , each with 30 beds per ward .
• Plant room Four ( 4 ) supplies wards 15 to 20 , each with 30 beds per ward .
www . plumbingafrica . co . za @ plumbingonline @ plumbingonline @ PlumbingAfricaOnline November 2023 Volume 29 I Number 9