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Topic: Thermal mass

	Thermal mass - Wikipedia, the free encyclopedia
		Thermal mass, in the most general sense, is any mass that absorbs and holds heat.
		In the architectural sense, it is any mass that absorbs and stores heat during sunny periods when the heat is not desireable in the living space of a building, and then releases the heat during overcast periods or during the night, when the heat is desireable.
		The wall used for thermal mass should have the appropriate thickness, so that the interior of the building remains cool during the day, and heat is transferred into the interior during the night.
	en.wikipedia.org /wiki/Thermal_mass (829 words)

	Thermal mass flow sensor - Patent 5279154
		A thermal mass flow sensor for use in a thermal mass flow meter having a bypass carrying a flow of gas in a bypass flow direction as defined in claim 3, wherein said thermally responsive winding comprises an upstream thermally responsive winding and a downstream thermally responsive winding.
		A thermal mass flow meter for measuring a mass rate of flow of a gas as defined in claim 6, wherein said thermally responsive element comprises a thermally responsive winding wound about a third portion of said sensor tube which is positioned between said first portion and said second portion.
		The thermal mass flow meter includes a thermal mass flow sensor 405 which is coupled to receive a portion of a flow of gas from a bypass or bypass flow path 406 having a gas inlet 408 and a gas outlet 410.
	www.freepatentsonline.com /5279154.html (4469 words)

	Axial thermal mass flowmeter - Patent 5780736
		The thermal mass flow sensor is coupled to the conduit with the longitudinal axis of the thermal mass flow sensor being aligned substantially parallel to the general direction of the fluid flow within the conduit.
		Thus, the heat transfer between the thermal mass flow sensor and the fluid flow is the parameter which is used to determine the fluid flowrate, and anything which affects this heat transfer will have a corresponding effect on the output of the thermal mass flow meter.
		The elongated thermal mass flow sensor 46 and elongated temperature sensor 48 are aligned with their longitudinal axes substantially parallel to the general direction of flow 50 in use.
	www.freepatentsonline.com /5780736.html (2273 words)

	Solar Thermal Mass
		Thermal mass materials have the ability to conduct and store energy, both heat and cold, and to release that energy back into the living space when it's needed.
		Since the mass floors and walls are cooler, the heat is absorbed and conducted into these materials.
		The amount of south facing glass to be installed is related to the amount of thermal mass in the home, and the reverse is also true.
	www.epsea.org /mass.html (386 words)

	Thermal Mass
		Thermal mass can moderate the temperature of occupied spaces, minimize the need for mechanical cooling and reduce winter heating requirements, but to do so it must be “coupled” to heat sources and some means of distribution such as the air handling system.
		Providing dedicated thermal mass is expensive with the possible exception of multiple layers of gypsum board and high-density concrete topping on wood floor systems.
		This diffuse thermal mass approach depends on inter-reflected sunlight and convection currents to transfer the solar heat gain to the wall surfaces.
	greenbuildings.santa-monica.org /envelope/envthermalmass.html (451 words)

	Your Home Technical Manual - 1.7 Thermal mass
		Thermal mass is not a substitute for insulation.
		Thermal mass is particularly beneficial where there is a big difference between day and night outdoor temperature.
		Whilst low mass is generally the best option, recent research has shown that innovative, well insulated and shaded thermal mass designs have been able to lower night time temperatures by 3 to 4°C in hot humid areas with modest diurnal ranges.
	www.greenhouse.gov.au /yourhome/technical/fs17.htm (2828 words)

	Passive Solar Design - Thermal Mass (Site not responding. Last check: 2007-10-18)
		Thermal mass is simply a solid or liquid material that will absorb and store warmth and coolness until it is needed.
		Thermal mass in the form of concrete, masonry or water has a much better storage capacity for heating and cooling than does the surrounding air.
		In the summer, thermal mass should be shaded so it draws the warmth from the surrounding air and cools the room.
	www.consumerenergycenter.org /homeandwork/homes/construction/solardesign/thermal.html (366 words)

	Thermal Mass (Site not responding. Last check: 2007-10-18)
		According to NBS researchers, "the mass effect relates to the phenomenon in which heat transfer through the walls of a building is delayed by the high heat (retention) capacity of the wall mass.
		NBS researchers explained the energy-saving effect of mass during the summer cooling season this way: "In an insulated wood frame building, which is considered to have low mass, the maximum wall heat gain rate during this season occurs during the day when the cooling system is operating most often and working the hardest.
		During the winter heating season no effect of mass was noted, since all insulated buildings and the log building required comparable amounts of heating energy each hour to maintain their predetermined indoor temperatures.
	www.cedarridge.biz /thermal.htm (1686 words)

	Simultaneous Thermal Analysis/Mass Spectrometer
		A mass spectrometer (MS) is attached to the STA instrument for evolved gas analysis.
		Differences in the thermal behavior of the two materials caused by differences in specific heat, occurrence of an exothermic or endothermic reaction, or a phase change result in a temperature difference between the two crucibles.
		During the thermal cycle, a capillary leak allows samples of the gaseous environment in the immediate vicinity of the specimen to be drawn into a quadruple mass spectrometer.
	www.ms.ornl.gov /htmlhome/tpuc/sta.html (314 words)

	Thermal Mass - The Concrete Network
		The mass of the earth can be used as a flywheel when it is heated under a radiant concrete slab.
		Thermal mass in a heated shop or hangar floor responds rapidly to the change or air temperature when a big overhead door is opened.
		This mass may be in the form of gypsum or other cementitious material or metal plates in the panel construction.
	www.concretenetwork.com /concrete/radiantfloorheating/thermalmass.html (289 words)

	A Flow Measurement Primer - Thermal Mass Flow Meters
		Thermal Mass Flow Meters are based on an operational principle that states that the rate of heat absorbed by a flow stream is directly proportional to its mass flow.
		The amount of heat dissipated from the heat source in this manner is proportional to the number of molecules of a particular gas (its mass), the thermal characteristics of the gas, and its flow characteristics.
		Coriolis mass flowmeters tend to be much larger is size compared to other types of flowmeters and, when purchase price is of concern, Coriolis mass flowmeters may not be an option due to their high price.
	www.crossinstrumentation.com /ga/mfg/Flow/tmf_meters.htm (1110 words)

	Sourcebook Passive Solar Design
		Thermal mass refers to materials such as masonry and water that can store heat energy for extended time.
		The thermal mass will absorb heat during the day; however, excessive humidity will reduce the cooling effect from the cooler thermal mass.
		Interior thermal mass materials such as stone and brick generally add to the cost of a home but can also be considered aesthetic enhancements.
	www.greenbuilder.com /sourcebook/PassiveSol.html (708 words)

	Thermal Mass and R Value
		Thermal Mass is a property that enables building materials to absorb, store, and later release significant amounts of heat.
		Thermal bridging is the transfer of heat across building elements, which have less thermal resistance than the added insulation.
		The benefits of mass walls vary by climate and can be influenced by factors such as temperature "swings" (differences between the high and low outdoor temperatures during the day), by solar radiation and wind near the building, and by how the building is designed, operated, and maintained for comfort to be energy efficient.
	www.safewalls.com /InformationPage2.htm (2740 words)

	Mass / mass.opportunitiesetc.biz (Site not responding. Last check: 2007-10-18)
		Official mass state mass homepageprovides mass a mass list mass of mass state mass agencies mass and mass offices.
		A mass daily mass almanac mass of mass the mass people, mass places, mass and mass stories mass that mass madestate mass history.
		Housed mass on mass a mass vast mass 19th mass century mass factory mass campus, mass MoCA mass features mass visual, mass performing, mass and mass new mass media mass arts.
	mass.opportunitiesetc.biz (195 words)

	Thermal Physics [encyclopedia] (Site not responding. Last check: 2007-10-18)
		Thermal physics is a particular interesting aspect of physics as it underlies the operation of engines and refrigeration systems.
		The temperature of the object was then a measure of the thermal energy, essentially an average of the kinetic energy of all the molecules of that object.
		Thermal action would also cause the ratchet to bounce out of place, and the skewed configuration of the gear teeth would make it more likely the gear would move in reverse if that happened.
	www.kosmoi.com /Science/Physics/Thermodynamics (7457 words)

	Troemner Calibration Services - Thermal Mass Flow
		The Thermal Mass Flow Calibration Laboratory is ISO/IEC 17025 compliant.
		Laboratory mass flow measurement accuracy is as low as +/- 0.2% of reading from 2 sccm to 100 slpm @ 1500 psi inlet pressure for Nitrogen and Helium (up to 240 slpm at 1,500 psi inlet pressure for Hydrogen).
		Level 2 Thermal Mass Flow Calibration Service – designed for resizing and re-ranging gas mass flow meters and flow controllers that may not require the extensive measurements, calibration and repair provided by the Level 1.
	www.troemner.com /cal_thermal.php (904 words)

	BuildingGreen.com - EBN 7:4 - Thermal Mass and R-value: Making Sense of a Confusing Issue
		The issue of thermal mass and its effect on the energy performance of buildings is one of the most confusing issues facing designers, builders, and buyers of buildings today.
		When people refer to the “mass effect” or “effective R-value,” they are generally referring to the ability of high-mass materials, when used in certain ways, to achieve better energy performance than would be expected if only the commonly accepted (steady-state) R-value or U-factor of that material were considered.
		Until standardized procedures for determining the regional significance of the mass effect are widely applied, there will likely be continued confusion and continued exaggeration regarding the energy benefits of thermal mass.
	www.buildinggreen.com /features/tm/thermal.cfm (2250 words)

	Thermal Mass
		Mass flow rate and totalized flow, as well as other configuration variables, are displayed on the meter's 2 x 12 back-lit LCD panel.
		The instrument electronics provide a unique feature not available in any other thermal mass flow meter: a means to confirm or "field-validate" that the flowmeter's primary sensing elements have not drifted or shifted from their original calibration.
		The thermal mass flow meter incorporates a unique dual-plate flow conditioner to eliminate velocity profile distortions as well as swirl and temperature stratification in the gas stream.
	www.processcontrolscorp.com /thermal.htm (1162 words)

	Sustainable design, passive solar house HTM holistic housing consultation packages for the earthhome do-it-yourselfer.
		Learn why high thermal mass (HTM) dry stack, concrete block (or poured-in-place concrete wall) construction is a much better answer than excessive insulation (high R value) air-tight construction for any climate.
		High thermal mass building materials allow the heating and cooling effect to be stored within the home's walls and floor (radiant).
		Thermal mass is a relative measure of an object's ability to store heat, "K" value.
	www.thenaturalhome.com /passivesolar.html (6897 words)

	Thermal Mass Flow Meters from Sage Metering, Inc.
		The Sage Metering, Inc. management has over 80 years of combined experience in delivering quality in-line and insertion thermal mass flow meters for a wide variety of industrial needs—and is dedicated to providing you with the performance and customer support that you deserve.
		Sage Thermal Mass Flow Meters are designed for high performance mass flow measurement of flow rate and consumption of gases such as air, oxygen, natural gas, nitrogen, digester gas, hydrogen, argon, carbon dioxide and other gases and gas mixes such as flare gas.
		Isolated 4-20 ma outputs for mass flow and temperature, optional relays, and a convenient RS232 and keypad user-interface, gives you the flexibility to integrate the functions of flow measurement with your specific needs.
	www.sagemetering.com (227 words)

	Thermal Mass, Inc. (Site not responding. Last check: 2007-10-18)
		Because of the height of the cathedral ceiling the facade was built 2 feet higher than the top of the core making the dimension of the installation more in proportion with the space it occupies.
		The welded steel arched door was custom made by Thermal Mass Inc. The glass dimension is 20" wide and 20" to the top of the arch.
		See the photo of the used brick custom firebrick core for a variation of the relationship between raised hearth and door.
	www.thermalmass.com /photo_2.html (274 words)

	Energy Value of Masonry (brick, block) Construction Homes; Thermal Mass, R-value,block vs. wood
		Thermal mass ratings are determined by measuring the building materials/wall unit energy efficiency in conjunction with other layers of materials attached to the wall, i.e.; particle boards, drywall, stucco.
		There are a number of combinations of materials used in construction and their thermal mass and R-value efficiencies vary depending on how they are used in the region of the country (climate considerations).
		High mass walls are most beneficial in moderate climates that have high daily temperature swings and nearly all areas with significant cooling loads can benefit from thermal mass in EXTERIOR walls.
	www.masonryforlife.com /Energy.htm (1272 words)

	BERC - Thermal Mass Benefit
		Wall systems with significant thermal mass have, depending on the climate, the potential to reduce building annual heating and cooling energy requirements below that of a standard wood-frame construction with similar steady-state R-value.
		In 1991 fundamentals were developed for a procedure for measuring and generating metrics that reflect thermal mass benefits.
		The mass effect will be determined by comparing the annual energy consumption from the standard house using the "equivalent wall" to that resulting from the identical house with a wood-frame walls.
	www.ornl.gov /roofs+walls/whole_wall/mass.html (585 words)

	Fluid Components International (FCI) - A world leader in gas flow measurement and Thermal Dispersion Technology (Site not responding. Last check: 2007-10-18)
		FCI is a world leading manufacturer of mass flow meters, flow switches and level switches for use in industrial and commercial applications.
		FCI gas mass flow meters are used in pipe diameters from 1/4 inch [6 mm] to over 99 inches [2500 mm].
		From small dosing lines, to fuel gas feed lines, to mid-size aeration lines to large stacks and flare gases, FCI mass flow meters, flow switches and level switches are installed and working with superior accuracy and reliability day-in and day-out.
	www.fluidcomponents.com /Main.htm (167 words)

	GBlist: Re: Thermal Mass (Site not responding. Last check: 2007-10-18)
		Therefore, many of Dean's observations about the "cooling effect" of thermal mass in Oregon could be correct, and bear attention.
		Again, huge mass buildings definitely work, as they will never freeze, and they are not unpopular in part because they are usually compared with the inhabitants previous dwelling, an ugly, annoying, lifeless, maintenance quagmire, stick framed 3 little pigs type house that ate cordwood like a steel mill.
		But just the right amount of mass is much better, and if the climate is not sunny, or the south glazing not sufficient, then high mass houses can become caves.
	solstice.crest.org /pipermail/greenbuilding/1999-July/014406.html (730 words)

	Energy Glossary Letter T
		THERMAL BREAK (thermal barrier) -- An element of low heat conductivity placed in such a way as to reduce or prevent the flow of heat.
		THERMAL MASS -- A material used to store heat, thereby slowing the temperature variation within a space.
		THERMALLY ENHANCED OIL RECOVERY (TEOR) -- Injection of steam to increase the amount of petroleum that may be recovered from a well.
	www.energy.ca.gov /glossary/glossary-t.html (1255 words)

	A Flow Measurement Orientation
		The operation of angular momentum-type mass flowmeters is based directly on Newton's second law of angular motion.
		Again, it was the slow evolution of sensors and electronics that delayed creation of the first commercial Coriolis mass flowmeter until the 1970's.
		In view of these considerations, mass flowmeters, which are insensitive to density, pressure and viscosity variations and are not affected by changes in the Reynolds number, should be kept in mind.
	www.tcomega.com /literature/transactions/volume4/T9904-06-FLOW.html (3246 words)

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