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  1. P-H Diagrams
  2. The Fundamental Myth
  3. Cascade systems
  4. Psychrometrics
  5. Throttling Effect
  6. basic operating principles of compressors
  7. textbok on the modern refrigerators
  8. capillary tube design
  9. Domestic refrigerator coolant data
  10. how to calculate the length of evapurator
  11. Surface wetting of R22 vs Ammonia
  12. household water line pressure
  13. calculation of evap..and condenser
  14. Nominal HP
  15. measuring vacuum unit
  16. pressure test
  17. Walk in freezer with no LLS
  18. ventilation for laundry
  19. My Customer's Air Conditioner isn't keeping the beer cold!
  20. AC/DC control voltage
  21. Balanced port TEVs
  22. VC or not VC
  23. Infiltration at entry
  24. Vapor Pressure
  25. motor horse power
  26. hvac/r terminology
  27. Water Source Heat Pump
  28. Unloader
  29. Modifying cabinet temps
  30. Are all 8000BTU Window AC created equal?
  31. Dye?
  32. newbie questions.......
  33. ? for herefishy
  34. Hot gas defrost
  35. Super what???
  36. Sub cool?
  37. alternative refrigerants
  38. Brazing vs. soldering
  39. Urgent!!! S.O.S. - nozzle size
  40. Orifice
  41. coaxial (tube in tube) heat exc.
  42. Oil
  43. Oil
  44. Charging Split, Using Amps
  45. cold river water
  46. sight glasses
  47. condensing temp rule of thumb
  48. water cooled condensers
  49. accurators
  50. Disharge temp
  51. Absorption Refrigeration
  52. unloaders and oil press.
  53. headmasters
  54. 120 VAC or 12 VDC
  55. refrigeration oils
  56. tev bulb
  57. noobie question re testing compressor
  58. R12 and R409a
  59. disharge temp
  60. Thermodynamic Laws
  61. capillary tubes and mass flow when fed with liquid/gas
  62. TEV with MOP: how to keep valve body temp above bulb temp?
  63. Copper U Values
  64. flash gas
  65. Shell/Tube flow rate?
  66. starting out
  67. oil switchs
  68. Cabinet capacity
  69. Tube pitch squared/staggered
  70. Throttling in a valve
  71. R-value conversion
  72. Tube staggered/squared
  73. Burn out procedures
  74. Refreshing memory
  75. Oil "foaming" with R-402B
  76. tev bulb in immersion well?
  77. basic refrigerator properties
  78. High air off
  79. Oxy nozzles
  80. TEV - Pressure limiting element
  81. oversized filter/drier
  82. Power required in a compressor
  83. My Problem
  84. Noobie question.Evaporator Pressure.
  85. Tin/Antimony Solder
  86. R12 vs R134A
  87. Questions Ammonia evaporators
  88. Rebuilt truck refrigeration units (Carrier)
  89. Simple question
  90. Defrost hot glycol?
  91. ammonia evaporators
  92. Duct Size Help!
  93. Recirculations ammonia evaps
  94. Direct Energy Consumption Question
  95. Compressor Displacement
  96. Looking for chiller info on the web....
  97. frost top construction ???
  98. pressure drop of pump return line ammonia
  99. Online Technical Articles
  100. Powering a 1/3HP Compressor
  101. Article in ACH&R News
  102. Horsepower = Tonnage
  103. Liquid Receiver Calculations
  104. Coil Air Off Temperature
  105. How the refrigerator is less humid than outside
  106. Faulty Fridge/freezer
  107. compressor coil
  108. gas evaporater fridge efficiency ?
  109. Freon System Pressure Relief
  110. Pressure relief valve
  111. hvac &r university
  112. Danfoss AKV10 valves
  113. Cooling tower water pumps
  114. Stainless To Copper Joint
  115. Brazing tungsten to brass: can it be done?
  116. How many small strands needed to equal pipe pressure drop?
  117. TEV superheat setting and low temperatures
  118. Relative Humidity Glycol Air Cooler
  119. Fact or Fiction
  120. Hot gas pipe sizing
  121. Current Research Topics
  122. About gas blend properties (how can high pressure components condense?)
  123. What should superheat be on...
  124. High pressure float expansion devices.
  125. Multiplex
  126. enthalpy pressure diagram.
  127. to visit
  128. expention valve equalizer
  129. Entropy
  130. environmental protection act
  131. low ambient - low liquid level ?
  132. Water PT curve
  133. evaporator
  134. what's the difference between the dry and flash type economizer?
  135. Help to calculate Heat Exchancger
  136. cap tube
  137. multiple evaps
  138. Building a small refrigerator
  139. Performance of liquid line dryers at -40C/-40F
  140. Regulation regarding hydrocarbons in an cascade
  141. Urgent, Kirchoff question
  142. System Design Pressures
  143. Calculating properties of refrigerant blends (R507/R410A)
  144. Ambient and Condensing.
  145. Sight glass , Flashing ?
  146. Can a home freezer maintain -23C/-10F
  147. Compressor's volume efficiency
  148. Migrate Oil problem - Medium Refrigeration System
  149. Compressor pumping efficiency
  150. Superheat
  151. Thermodynamics
  152. Is this possible?
  153. metres squared 'v' square metres
  154. superheat help
  155. A question about the pressure drop in coil .
  156. freezer maintenance
  157. solar powered refrigeration R&D
  158. hunting???
  159. Compressor Oil Charge
  160. cooling copper pipes after braizing
  161. Strange increase of efficiency
  162. refrigeration circuit symbols
  163. en378
  164. Safe Handling Licence
  165. Use of schrader valves
  166. Oil pressure switch- Low oil level
  167. Designing Roll Bond Evaporator
  168. Will it work.
  169. Why Do Condenser Fans Suck ?
  170. Compressor back pressure rating
  171. System charging
  172. air cooled condenser design
  173. Dramatize R effect of pressure alone
  174. Air Compressors
  175. Total System Charge
  176. someone please help!
  177. Identification of a Prestcold
  178. Help with charge calcs
  179. Edinburgh cafe explosion
  180. Converting from R12 R22 R502
  181. Pipe Sizing
  182. r22 enthalpy diagram
  183. Usefull General Info
  184. What is the best brand name for refrigeration valves
  185. Stirling Cycle
  186. What kinf of pipes are used for coldstores ?
  187. Carrier Moduline VAV air terminals
  188. Cap Tube Sizes
  189. Nox
  190. liquid desiccant dehumidify
  191. Can an amature build a homebrew temprite???
  192. Service Bulletin Quiry
  193. cleaning old pipework
  194. evaporative condenser
  195. Heat transfer through tubes
  196. Pykrete Summer Igloo
  197. Eroding in pipe heat exchangers
  198. Comments on this please
  199. zone heating /cooling work station
  200. backforward curve centrifugal fan
  201. Capacity Control Head
  202. HPWH issue
  203. HVAC system trend in the future
  204. Condensor split temperature
  205. re ref. circuit
  206. nitrogen purging
  207. Chocolat storage
  208. DX coil software
  209. How to calculate gas top up (R22)
  210. Leaks in refrigeration systems
  211. why icing on the suction valve
  212. need your help
  213. to Peter 1
  214. Acraclad coating
  215. undersize pipe and kink
  216. leaving dry and wet bulb difference of Evaporator coil
  217. Expansion
  218. oil in tank heat load calculation
  219. Internal V's External Expansion Valves
  220. Superheat
  221. Vacuum procedure
  222. need help
  223. hot discharge air from C.U
  224. Refrigerant R22/R404A
  225. Quick question about using a fridge in an RV
  226. Gas and liquid lines
  227. Ammonia Gauges?
  228. capacity converstion
  229. Chilled Displays :
  230. Heat pump temperature control
  231. thermoelectric air coolers?? Is it suitable??
  232. Evaporative condenser surface area
  233. need help
  234. Compressor for island case
  235. Guidance on a first foray...
  236. running pressures
  237. water cooling coil design
  238. Leaving conditions of DX HELP REQUIRED!!!
  239. Oil parameters
  240. water coil anti-freeze
  241. Cascade Refrigeration System
  242. household portable dehumidifier
  243. Freezer/Cooler Question
  244. 3D software
  245. expansion water tank sizing program
  246. secondary refrigernt additives
  247. I want to find detailed files about ALCO zz thermo expansion valve
  248. Buffer Tank Sizing
  249. superheat measure
  250. reverse cycle low ambient