Sans healthcare watch

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Sans healthcare watch

  1. 1. SANS Committees: Healthcare Watch -Report Back Toby v Reenen CSIR
  2. 2. SANS 204: ENERGY EFFICIENCY IN BUILDINGS Services Working Group • Work being concluded on interpretation and application of XA2 50% hot water rule. • XA2 demands that 50% of annual hot water consumed be generated by means other than direct electric heating. • The intention of the rule is to save a minimum of 50% of the water heating energy. • Unfortunately the wording “by volume” in the ruling allows for significantly lower savings to be accepted by solar water heating and heat pump installations.
  3. 3. SANS 204: ENERGY EFFICIENCY IN BUILDINGS Services Working Group • Work being concluded on interpretation and application of XA2 50% HOT WATER RULE. • It is proposed that the voluntary SANS 204 standard pilot a more stringent requirement of demanding that 50% of the ENERGY REQUIRED in GENERATING the consumed hot water volume be from means other than direct electric heating. • The issue of the viability of induction geysers has also been raised for review.
  4. 4. SANS 204: ENERGY EFFICIENCY IN BUILDINGS - Climate Map • The Existing Climate Map is being reviewed: • Simple to interpret • Coarse resolution of “binning” doesn’t reflect local nuances in climate • Very difficult to measure and quantify • Doesn’t offer detailed insight to design information
  5. 5. SANS 204: ENERGY EFFICIENCY IN BUILDINGS - Climate Map • A Revised Map needs the following: • Map data needs to be relevant to building energy calculations, tools, regulations and standards • Needs to allow for clear interpretation by stakeholders • Needs to reflect the human perception of climate • Needs to reflect building response to climate (Passive design) • RH% • Convection?
  6. 6. SANS 204: ENERGY EFFICIENCY IN BUILDINGS - Climate Map • Proposed model • Calculate SET using current best climate data. • Develop index representing Summer-High & Winter-Low SET per cell. (A:B) • Single index could then be used in consideration of seasonal peak heating and cooling requirements
  7. 7. SANS 1544: ENERGY PERFORMANCE CERTIFICATES • This committee has established to finalise the drafting of the standard for energy performance certificates. • The measurement defined by this standard includes energy consumption data collected from one year of operation of a building but excluding its first year of operation. • The energy consumption data includes building as well as operational energy • This annual value will then be benchmarked against the guidance values from SANS 10400-XA.
  8. 8. SANS 1544: ENERGY PERFORMANCE CERTIFICATES • It is noted that the SANS 10400-XA does not define energy consumption guidelines data for healthcare buildings and the committee would welcome the submission of healthcare based energy consumption data for evaluation and inclusion.
  9. 9. SANS 10400-O: VENTILATION & LIGHTING • This committee was established to address a number of concerns regarding the lighting and ventilation requirements contained therein. • Of particular concern to healthcare buildings is the methodology adopted by and contents of Table 2. • Application of ASHRAE 62.1 • Additive Method • Nuanced Approach • Can result in more energy efficient systems • Requirements for Respiratory Isolation Rooms (WHO Guide) • Lighting: Task Lighting & Colour Rendering Index
  10. 10. IUSS: Ventilation Design Philosophy • Hierarchy of Design Solutions Area Occupied Fully Mechanical Ventilation Occupants/Equipment NOT ADAPTABLE or Tolerant of Indoor Conditions Hybrid systems with Climatic adaptability Fully Passive Ventilation Occupants/Equipment ADAPTABLE or Tolerant of Indoor Conditions
  11. 11. SANS 10400: Future work • Other work that will be addressed as the committees are established: • Fire protection requirements in healthcare buildings • (Your comments here) • (and here) • (and here)

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