Air-conditioned room

Nielsen, P. V., and Ake T. A. Moller. 1987. Measurement on buoyant wall et flows in air-conditioned rooms. In Roomvent S7. Stockholm. 

Nielsen, P. V. 1980. The influence of ceiling-mounted obstacles on the airflow pattern in air-conditioned rooms at different heat loads. Building Service Engineering Research and Jeebnoi-ogy, vol. 1, no. 4. 

The aim of the mixing air conditioning strategy is to provide uniform conditions throughout the air-conditioned room. 

P.V, Nielsen. Flow in air conditioned rooms. Ph.D. thesis. Technical University of Denmark, 1974. 

There should be no space heating within air-conditioned rooms but some gains may arise from hot water pipes passing through to other areas ... 

Asphyxiation is another invisible hazard. If the oxygen level in a room decreases below a certain level you may become unconscious and die. In general, big laboratories are better than small labs because the natural volume of the room will help to dilute these effects. Likewise, an efficiently air conditioned room will change the air in the room fairly rapidly and this will also help keep oxygen levels up. If your NMR magnet is in a small room, it may be necessary to install oxygen depletion sensors. These will alert you should the oxygen level fall below a safe value. 

The thermocouple of Prob. 8-127 is placed horizontally in an air-conditioned room. The walls of the room are at 32°C, and the air temperature in the room is 20°C. What temperature is indicated by the thermocouple What would be the effect on the reading if the thermocouple were enclosed by a polished-aluminum radiation shield ... 

The basic mission of the Physics and Biology Laboratories is to test paper treated with products used in the restoration process. Physics is in an air-conditioned room, maintained at 60% relative humidity at 21°C, equipped with machines for testing folding endurance, tensile, and burst strength of paper. Biology runs tests, primarily with culture media, to determine the susceptibility of the treated paper to attack by microorganisms these are identified and a determination is made on how to avoid or eradicate them. Aging chambers are available for tests made by the laboratories. 

A Dewar flask, in which 400 cm of kerosene, one CA thermocouple to measure the Tug and a Nichrome wire of about 1.7 Q are contained, is set under conditions of no air circulation in an aluminium box settled in a fairly large thermostat, which in turn is placed in an air-conditioned room maintained at an almost constant (room) temperature. In this connection, the temperature of the thermostat is maintained at a constant temperature 2 3 K higher than the The other thermocouple to measure the T i-up is held outside the flask set in the aluminium box. The thermocouples used are calibrated in the range of 40 to 60 °C before the measurement (Figs. 48-53). 

The isothermal storage testing device is placed in an air-conditioned room maintained at an almost constant (room) temperature throughout every run. 

A balloon filled with helium has a volume of 2.30 L on a warm day at 311 K. It is brought into an air-conditioned room where the temperature is 295 K. What is its new volume ... 

Situated on a white sandy-beach hugged by palm trees and spacious air-conditioned rooms. See page I 7... 

Three delightful small inns with moderate rates located In the heart of San Juan, near the beach and casinos. Air-conditioned rooms with private bath, cable TV, telephone and complimentary tropical breakfast. 

The equipment required to select and train a panel of persons comprises about 15 PAP meters, equipment for the production of 2-propanone (reference gas) and an air-conditioned room. 

Water is often a major impurity in deuterated solvents, especially in polar solvents. For example, commercial acetone- contains 150-250 ppm of water even immediately after opening the bottle. The water content in acetone-sample tube with a plastic cap increases lOOppm/day in the chemical laboratory. When the sample in the NMR tube is kept in an effectively air-conditioned room (NMR laboratory), the water uptake rate decreases to 40ppm/day. Sealing with Parafilm is not effective in reducing the rate of water uptake. Sealing with shrinkable tube made of polyethylene effectively decreases the rate to ca. lOppm/day, even in the chemical laboratory. When the tube with plastic cap is... 

Another important point to make here is that the failure properties of powders are affected strongly by humidity and to a varying degree also by temperature and time of consolidation. It is important, therefore, that those properties are tested under controlled conditions using sealed powder samples or air-conditioned rooms or enclosures. Time-consolidated samples must be tested to simulate the storage conditions. 

Suitable examinations have shown that emissions from building products strongly depend on the temperature (e.g. van der Wal, 1997). For the purposes of standardized examinations it is thus important to have the possibility to regulate the temperature inside the test chamber to, e.g., 23 °C, with a maximum variation of 1 K. This can be achieved by using the chamber inside an air-conditioned room (ambient air temperature = chamber air temperature), by controlling the temperature of the chamber walls or by installing a heating appliance inside the chamber. 

The manufacture of Hypodermic Tablets shall be conducted under aseptic conditions in a separate air conditioning room, the walls of which shall be smooth and washable. The granulation, tableting and packing shall be done in this room. 

An area of minimum twenty five square meters is recommended for basic installation. The manufacture and filling shall be carried out in an air conditioned room under aseptic conditions. The room shall be further dehumidified if preparations containing antibiotics are manufactured as necessary. 

Unfortunately, early computers were very expensive and not extremely reliable. They required backup controllers and had to be installed in air-conditioned rooms. 

After surface treatment, all substrates were stored less than 2 hours in an air-conditioned room (20 2°C and 50 5%r.h.), before polymer application. The epoxy prepolymer used was diglycidyl ether of bisphenol A (MW=348 g mol , DGEBA DER 332 from Dow Chemical). The curing agents were either IPDA from Fluka or DETA from Aldrich. Assuming a functionality of 4 for IPDA, 5 for DETA, and 2 for the epoxy monomer, the stoichiometric ratio aje used was equal to 1 (exceptions are mentioned). 

Electronic devices are eommon and are exposed to much harder conditions than air-conditioned rooms. The small dimensions of a microchip and the silicon-based IC elements spaced less than 0.2 pm show that the tolerance for corrosion loss is as small as a picogram (10 g). Submicron dimensions of electronic circuits, high-voltage gradients, and a fairly high sensitivity to corrosion lead to a unique corrosion-related issues. 

Dry-bulb temperature calculated outside air-conditioning room in summer 35.6°C. 

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