electric heating and cooling systems prices

Ngày tải lên: 27/06/2014, 05:20

... reads the annual TRNSYS heating and cooling load profile so as to determine the values of the peak heating and cooling loads for each month of the year (see Table 2) and their durations. Moreover, ... geometrical attributes and inf H the factor of opening’s position and air force exposure. Annual heating demand of the building is 33.78 kWh/m 2 whereas cooling demand is 27.34 kWh/m 2 . ... temperature estimations (average deviation ±2.5 K) when annual heating and cooling demand values are close and approximately equal to 30 kWh/m 2 and it is assumed heat pump absence. 5. Conclusion...

Ngày tải lên: 05/09/2013, 16:10

Ngày tải lên: 05/09/2013, 16:10

Ngày tải lên: 07/03/2014, 10:20

Ngày tải lên: 27/06/2014, 17:20

Ngày tải lên: 27/06/2014, 17:20

Ngày tải lên: 27/06/2014, 08:20

Ngày tải lên: 24/10/2014, 17:25

... SHU: Short-term and Heavy rainy, SDG: S hort-term and Drainage, LSD: Long-term and Stagnant, LHT: Long-term and Heavy rainy, LMK: L ong-term and Monsoon flood, PDL: Persistent and Drainage, PHS: ... supply and (c) sanitation systems and attitudes for (d) water treatment at home, (e) children’s defecation habits and (f) hygiene practices Note: Communities code name, SRM: Short-term and Rainy, ... no latrine at all Hand washing with soap before eating Hand washi ng without s oap before eating No hand washing before eating Hand washing after defecation with soap Hand washing after defecation...

Ngày tải lên: 05/09/2013, 10:15

Ngày tải lên: 05/09/2013, 15:28

Ngày tải lên: 04/10/2013, 19:10

... rotational, and hybrid actuators and sensors can be synthesized, and a motion classifier is { } ℵ∈=ℵ nn: . Therefore, we have ( ){ } ℵ∈∈∈∈=ℵ××× nTtGgMmntgmTGM and, ,:,,, . Winding and cooling, power and ... or characteristic. Let A stands for actuators, B stands for sensors, and C stands for translational motion microstructure. Then, the region ABC represents actuators and sensors which are synthesized ... can be operated as motors and vice versa. That is, micro permanent-magnet electric machines can be used as the actuators and sensors. Electric machines have stationary and rotating members, separated...

Ngày tải lên: 17/10/2013, 11:15

... (time-invariant) fields, electric and magnetic field vectors form separate and independent pairs. That is, E and D are not related to H and B, and vice versa. However, for time- varying electric and magnetic ... NANO- AND MICROELECTROMECHANICAL SYSTEMS 4.1. FUNDAMENTALS OF ELECTROMAGNETIC RADIATION AND ANTENNAS IN NANO- AND MICROSCALE ELECTROMECHANICAL SYSTEMS The electromagnetic power is generated and ... problem . It was illustrated that NEMS and MEMS must be controlled. Nano- and microelectromechanical systems augment a great number of subsystems, and to control microscale electric motors, as discussed...

Ngày tải lên: 19/10/2013, 18:15

... br , and ψ cr are the rotor flux linkages; ψ ψ qr dr , and ψ or are the quadrature-, direct-, and zero-axis components of rotor flux linkages; r ω and rm ω are the electrical and mechanical ... the stator and rotor circuitry dynamics. As the control and state variables we use the voltages applied to the stator (as and bs) and rotor (ar and br) windings, as well as the stator and rotor ... ds , and ψ os are the quadrature-, direct-, and zero-axis components of stator flux linkages; u u ar br , and u cr are the voltages in the rotor windings ar, br and cr; u u qr dr , and u or ...

Ngày tải lên: 19/10/2013, 18:15

... changing standards for APIs, gateways, security methods, screens, operating systems, and browsers. There are also variable computing powers on the handheld devices and different bandwidth requirements. Wireless ... The WebSphere application server will handle the data dynamically and adapt it to the handheld device. Also it can run multiple applications and requests, and can be easily integrated to the backend ... install, configure and add new services: • The client application must be easy to install, customize, and add new handheld devices. • Easy to Integrate with other servers and Back-End systems: • Integration...

Ngày tải lên: 26/10/2013, 16:15

... Evolution and the Meanings of Life. New York: Simon and Schuster. Depew, D. J. 1998. Intelligent design and irreducible complexity. A rejoinder. Rhetoric and Public Affairs 1: 571–8. Depew, D. J., and ... Evolutionary Systems: Biological and Epistemological Perspectives on Selection and Self-Organization, ed. G. Van de Vijver, S. N. Salthe, and M. Delpos. Dordrecht: Kluwer, pp. 59–66. Weber, B. H., and ... Brains, Cities, and Software. New York: Scribner. Joyce, G. F., and L. E. Orgel 1993. Prospects for understanding the origin of the RNA world. In The RNA World, ed. R. F. Gesteland and J. F. Atkins....

Ngày tải lên: 01/11/2013, 07:20

... is H 4 = " H 2 H 2 H 2  H 2 # = 2 6 6 6 4 1111 1  11  1 11  1  1 1  1  11 3 7 7 7 5  (1.45) where row 1 and column 1 are Walsh code 0, or w 0 ;row3andcolumn3arew 1 ;row 4and column 4 are w 2 ; and row 2 and column 2 are w 3 . The Walsh code number w j is ... vectors g 1 = 101 ] and g 2 = 111 ] (1.17) and the corresponding code word  c 2  c 1 ] ,where c 1 = 2 6 4 b 2 b 1 b 0 3 7 5 g 1 and c 2 = 2 6 4 b 2 b 1 b 0 3 7 5 g 2  (1.18) and where b 0 , b 1 ,andb 2 are ... polynomials g 1 ( z )= 1 + z 2 and g 2 ( z )= 1 + z + z 2  (1.19) where 1 denotes the present input bit, and z and z 2 represent the previous input bits having one and two clock period delays, respectively, and + is...

Ngày tải lên: 07/11/2013, 16:15

... of the variations in the terrain and the distribution of buildings and streets. We allow for these variations by introducing a random variable λ having zero mean and standard deviation σ. Often λ ... random variable of the error in S 0 (dB) δ 0 random variable of the power control error in the received interference power ε random variable with standard deviation p 2 σ e λ shadow fading random ... variations using a log-normal distribution having a standard deviation of 4 dB and 3.5 dB for LOS and OOS paths, respectively [26]. The effect of path loss and shadow fading on the received signal power...

Ngày tải lên: 14/12/2013, 23:15

... filter pass band extends from 0 to f p and the stop band extends from f s to ∞. Within the pass band the filter response is prescribed within the limits  δ 1 , and within the stop band the filter ... PNI and PNQ codes, baseband filtered and modulated onto two quadrature carriers using the phase mapping described in Table 4.7. The PNI and PNQ codes have the same offset as the pilot channel and ... PNI and PNQ sequences dis- play perfect cross-correlation (see Equation (4.26)) and autocorrelation (see Equations (4.31)– (4.34)) properties. This is not so in the practical cdmaOne systems and...

Ngày tải lên: 14/12/2013, 23:15

... interfering mobile and zeroth BS, is r j = q D 2 j + r 2  2D j r cos ( ϕ ) (5.81) and ζ is the difference between λ ij and λ 0 , the independent random variables with zero mean and standard deviation ... b i ( t ) represents random independent binary data, and as a consequence the intracellular interference is a stationary random process. From the Central Limit Theorem, the summation of N  1 independent random ... random variable with zero mean and variance of σ 2 ζ = 2σ 2 , while D j is the distance between the zeroth BS and the jth co-channel BS. Note that a 2 0 j in Equation (5.80) is the path loss and...

Ngày tải lên: 14/12/2013, 23:15