ENERGY MANAGEMENT
traffic. Rather than a preference for lifts, an open stairwell invites use by staff, visitors and patients. This is consistent with the corporate ethos of helping everyone to be healthy and to live well.
Heating, ventilation and air conditioning In conjunction with the Department of Health and Human Services and the consulting team, ERH adopted a fresh approach for the facility at Echuca. It was identified early on that a fully sealed building with 100 per cent fresh air would be the solution adopted. In addition, heat recovery would be incorporated to maximise the benefit of energy opportunities. Bench testing was also completed to allow the incorporation of Rickard variable air volume diffusers with the site building management system. Static regain was designed into the duct pressure controls. Wells Reilley formulae were used to
assess the mean time to infection for traditional recirculating systems versus the proposed 100 per cent fresh air system. This resulted in a building management system function for a pandemic that can be initiated at times of higher public risk to increase air circulation rates. Additionally a bush fire mode for full recirculation was incorporated for use when the outside air quality is poorer than the indoor air quality due to bush fires. Echuca can be shrouded in smoke for many days when there are bush fires and at such times an increased number of presentations due to asthma have been known to occur. The heating, ventilation and air
conditioning (HVAC) system includes individual comfort control for each room, individual room supply and return air, a 100 per cent fresh air system, heat recovery wheels in all air handling units (AHUs; up to 700 kW), bush fire mode, variable geometry point of use diffusers and a central plant system. The inpatient wards comprise 18.5 per cent of building area but only consume 3.5 per cent of fan, light and power consumption for the
A typical bedroom.
whole site. Coupled with the two solar absorption chillers and hot and cold water storage the site has a very low overall energy profile. This profile is currently the topic of a study by the Commonwealth Scientific and Industrial research Organisation (CSIRO).
Building management system The building management system includes a high definition front end that is viewed from the engineer office and trades workshop. Standard functions such as monitoring of site energy and water consumption are logged and can be reported on. Included in the redevelopment was the installation of temperature monitoring in all bedrooms and the positioning of all variable air volume (VAV) diffusers. Trending and monitoring is live and can be undertaken without the need to disturb patients. Thermostatic mixing valves (TMVs) are also monitored by the system and automatically report when they are operating outside alarm set points. TMV trends have been used to identify building air leakage (ambient tracking) and consumption patterns as well as hand washing practices, which
Outdoor seating and circulation space.
show patterns of use for individual hand basins. This data can be used to assist with staff education and helps with auditing. The BMS also controls the automated generator testing programme, which occurs weekly for one hour. During this time the generators take a portion of site load. The BMS also generates alarms for
items of plant that have condition based maintenance programmes, such as air conditioning and town water filter changes. Links are also in place for the reporting of Dali light events, which can aid re-lamping programmes; the Dali lighting system automatically dims ward lights at the end of visiting hours. The BMS is also linked to the fire
indicator panel (FIP) and isolations and monitoring can be seen from the control screen. The suction tube system can also be seen from the BMS control screen to allow remote diagnostics to be undertaken. All exit and emergency lights test and report via software, which allows a single point of interrogation. Essential services maintenance reports are automatically generated which helps trades to be streamlined in their maintenance practices. Full data logging and remote access is available to the engineer from anywhere in the world. As a result of BMS integration, trades staff are moving towards the electronic interrogation and collection of information as one of their daily tasks and have embraced the information available to them at the touch of a button.
A side illuminated corridor ceiling. 20 An evacuated tube solar thermal field.
Conclusion At the end of the redevelopment, ERH and the CSIRO have been sharing daily data transfers to enable a full study of both solar chiller projects. CSIRO will be reporting on the findings to the World Solar Heating and Cooling Conference and reporting data to the International Energy Agency Task 53 group.
IFHE IFHE DIGEST 2018
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88
