scholarly journals Air-conditioning in New Zealand: power and policy

2022 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
Hugh Byrd ◽  
Steve Matthewman ◽  
Eziaku Rasheed
Keyword(s):  
New Zealand ◽  
Air Conditioning

scholarly journals Passive Environmental Control: The Use of Insulated Archival Boxes to Control Fluctuations in Relative Humidity and Temperature

2021 ◽  
Author(s):  
◽  
Andrea Jane Woods
Keyword(s):  
New Zealand ◽  
Relative Humidity ◽  
Environmental Conditions ◽  
Air Conditioning ◽  
Environmental Control ◽  
Hvac Systems ◽  
Data Logger ◽  
Ambient Environment ◽  
Environmental Requirements ◽  
The Difference

<p>Four archival boxes made from different materials, were tested to see how effective they were at stabilizing fluctuations in temperature (T) and relative humidity (RH) and if this method of passive environmental control could meet the environmental requirements of the Archives New Zealand Storage Standard (ANZSS), instead of using heating, ventilation and air conditioning (HVAC)systems. The boxes were placed in an un-insulated attic space in Auckland, New Zealand, during the winter for twelve weeks from June 7, to August 29, 2009. Twenty-four hour samples of T and RH of each box were taken by a Hobo LCD data-logger placed inside the boxes. Another Hobo LCD data-logger was placed in the ambient environment to determine the difference. The main results were; RH fluctuations inside all the boxes met part of Requirement 28, of the ANZSS, during the twelve weeks of the study, by not fluctuating more than 10% over a twenty-four hour period, even though the ambient RH fluctuated by as much 22%. However, although the T inside the boxes mostly fluctuated less than in the ambient environment it did not consistently reach the 4 degree centigrade or below fluctuation level of requirement, 29 of the ANZSS. The conclusion reached from the study is all the archival boxes used in study are effective in controlling fluctuations in RH and T; however, institutions needing to meet the ANZSS will require other methods to control environmental conditions.</p>

scholarly journals Determining the Modelling Input Parameters for Heating, Ventilation, and Air Conditioning Systems in New Zealand Commercial Buildings

2021 ◽  
Author(s):  
◽  
Anthony Gates
Keyword(s):  
Energy Consumption ◽  
New Zealand ◽  
Air Conditioning ◽  
Energy Performance ◽  
Hvac Systems ◽  
Commercial Buildings ◽  
Hvac System ◽  
Input Parameters ◽  
Parameter Values ◽  
The Ideal

<p>Template energy calculation models that have been produced by the Building Energy End-use Study (BEES) team are used to quickly and reliably model commercial buildings and calculate their energy performance. The template models contain standardised equipment, lighting, and occupancy loads; cooling and heating requirements are calculated using an ideal loads air system. Using seven buildings, Cory et al. 2011a have demonstrated that the template models have the potential to closely match the monthly energy performance of detailed (individually purpose built) models and the real buildings. Three of these models were within the ±5% acceptable tolerance to be considered calibrated. The four template models that were not within the acceptable tolerance have been identified to have complex Heating, Ventilation, and Air Conditioning (HVAC) systems that the ideal loads air systems could not replicate. Because HVAC systems consume one of the largest proportions of energy in commercial buildings, this has a significant impact on the reliability of the template models. To address this issue, a set of detailed HVAC systems were needed to replace the ideal loads air systems. Due to HVAC system parameters not being collected by the BEES team and the lack of published modelling input parameters available, it is unknown what values are reasonable to use in the models. This study used a Delphi survey to collect real building information of the commonly installed HVAC systems in New Zealand commercial buildings. The survey formed a consensus between HVAC engineers that determined what the most commonly installed systems are and their associated performance values. The outcome of the survey was a documented set of system types and modelling input parameters that are representative of New Zealand HVAC systems. The responses of the survey were used to produce a set of HVAC system templates that replace the ideal loads air systems. The HVAC template models updated the software default parameter values with values that are representative of commonly installed systems in New Zealand. The importance of the updated input values was illustrated through a comparison of the calculated monthly energy consumption. The resulting difference in energy consumption using the updated parameter values is typically <5% monthly; at worst it is 75% for Variable Air Volume (VAV) system in the Wellington climate during June.</p>

scholarly journals Passive Environmental Control: The Use of Insulated Archival Boxes to Control Fluctuations in Relative Humidity and Temperature

2021 ◽  
Author(s):  
◽  
Andrea Jane Woods
Keyword(s):  
New Zealand ◽  
Relative Humidity ◽  
Environmental Conditions ◽  
Air Conditioning ◽  
Environmental Control ◽  
Hvac Systems ◽  
Data Logger ◽  
Ambient Environment ◽  
Environmental Requirements ◽  
The Difference

<p>Four archival boxes made from different materials, were tested to see how effective they were at stabilizing fluctuations in temperature (T) and relative humidity (RH) and if this method of passive environmental control could meet the environmental requirements of the Archives New Zealand Storage Standard (ANZSS), instead of using heating, ventilation and air conditioning (HVAC)systems. The boxes were placed in an un-insulated attic space in Auckland, New Zealand, during the winter for twelve weeks from June 7, to August 29, 2009. Twenty-four hour samples of T and RH of each box were taken by a Hobo LCD data-logger placed inside the boxes. Another Hobo LCD data-logger was placed in the ambient environment to determine the difference. The main results were; RH fluctuations inside all the boxes met part of Requirement 28, of the ANZSS, during the twelve weeks of the study, by not fluctuating more than 10% over a twenty-four hour period, even though the ambient RH fluctuated by as much 22%. However, although the T inside the boxes mostly fluctuated less than in the ambient environment it did not consistently reach the 4 degree centigrade or below fluctuation level of requirement, 29 of the ANZSS. The conclusion reached from the study is all the archival boxes used in study are effective in controlling fluctuations in RH and T; however, institutions needing to meet the ANZSS will require other methods to control environmental conditions.</p>

scholarly journals Determining the Modelling Input Parameters for Heating, Ventilation, and Air Conditioning Systems in New Zealand Commercial Buildings

2021 ◽  
Author(s):  
◽  
Anthony Gates
Keyword(s):  
Energy Consumption ◽  
New Zealand ◽  
Air Conditioning ◽  
Energy Performance ◽  
Hvac Systems ◽  
Commercial Buildings ◽  
Hvac System ◽  
Input Parameters ◽  
Parameter Values ◽  
The Ideal

<p>Template energy calculation models that have been produced by the Building Energy End-use Study (BEES) team are used to quickly and reliably model commercial buildings and calculate their energy performance. The template models contain standardised equipment, lighting, and occupancy loads; cooling and heating requirements are calculated using an ideal loads air system. Using seven buildings, Cory et al. 2011a have demonstrated that the template models have the potential to closely match the monthly energy performance of detailed (individually purpose built) models and the real buildings. Three of these models were within the ±5% acceptable tolerance to be considered calibrated. The four template models that were not within the acceptable tolerance have been identified to have complex Heating, Ventilation, and Air Conditioning (HVAC) systems that the ideal loads air systems could not replicate. Because HVAC systems consume one of the largest proportions of energy in commercial buildings, this has a significant impact on the reliability of the template models. To address this issue, a set of detailed HVAC systems were needed to replace the ideal loads air systems. Due to HVAC system parameters not being collected by the BEES team and the lack of published modelling input parameters available, it is unknown what values are reasonable to use in the models. This study used a Delphi survey to collect real building information of the commonly installed HVAC systems in New Zealand commercial buildings. The survey formed a consensus between HVAC engineers that determined what the most commonly installed systems are and their associated performance values. The outcome of the survey was a documented set of system types and modelling input parameters that are representative of New Zealand HVAC systems. The responses of the survey were used to produce a set of HVAC system templates that replace the ideal loads air systems. The HVAC template models updated the software default parameter values with values that are representative of commonly installed systems in New Zealand. The importance of the updated input values was illustrated through a comparison of the calculated monthly energy consumption. The resulting difference in energy consumption using the updated parameter values is typically <5% monthly; at worst it is 75% for Variable Air Volume (VAV) system in the Wellington climate during June.</p>

Magellanic Cloud Eclipsing Binaries: Primary Distance Indicators

1999 ◽  
Vol 190 ◽  
pp. 563-566
Author(s):  
J. D. Pritchard ◽  
W. Tobin ◽  
J. V. Clausen ◽  
E. F. Guinan ◽  
E. L. Fitzpatrick ◽  
...  
Keyword(s):  
New Zealand ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Fundamental Parameters ◽  
Distance Indicators

Our collaboration involves groups in Denmark, the U.S.A. Spain and of course New Zealand. Combining ground-based and satellite (IUEandHST) observations we aim to determine accurate and precise stellar fundamental parameters for the components of Magellanic Cloud Eclipsing Binaries as well as the distances to these systems and hence the parent galaxies themselves. This poster presents our latest progress.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

A Cytochemical Study of Glucose-6-Phosphatase (G-6-PASE) in Cells Participating in Atherogenesis of Rabbit Aorta

1975 ◽  
Vol 33 ◽  
pp. 460-461
Author(s):  
Sidney D. Kobernick ◽  
Edna A. Elfont ◽  
Neddra L. Brooks
Keyword(s):  
Lipid Metabolism ◽  
New Zealand ◽  
Aortic Wall ◽  
Rabbit Aorta ◽  
Plaque Formation ◽  
Metabolic Changes ◽  
Atherosclerotic Plaques ◽  
Cytochemical Study ◽  
Cellular Alteration ◽  
New Zealand White Rabbits

This cytochemical study was designed to investigate early metabolic changes in the aortic wall that might lead to or accompany development of atherosclerotic plaques in rabbits. The hypothesis that the primary cellular alteration leading to plaque formation might be due to changes in either carbohydrate or lipid metabolism led to histochemical studies that showed elevation of G-6-Pase in atherosclerotic plaques of rabbit aorta. This observation initiated the present investigation to determine how early in plaque formation and in which cells this change could be observed.Male New Zealand white rabbits of approximately 2000 kg consumed normal diets or diets containing 0.25 or 1.0 gm of cholesterol per day for 10, 50 and 90 days. Aortas were injected jin situ with glutaraldehyde fixative and dissected out. The plaques were identified, isolated, minced and fixed for not more than 10 minutes. Incubation and postfixation proceeded as described by Leskes and co-workers.

Isozyme variation of Microsporum canis and M. cookei from New Zealand

1998 ◽  
Vol 36 (5) ◽  
pp. 255-262
Author(s):  
SIMPANYA ◽  
JARVIS ◽  
BAXTER
Keyword(s):  
New Zealand ◽  
Microsporum Canis ◽  
Isozyme Variation
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