Space　formation　of　passive　solar　greenhouses　plays　a　dominant　role　in　the　creation　of　required　lighing　and　thermal　conditions　and　in　increasing　the　efficiency　of　solar　energy　utilisation.　In　this　study,　the　energy　balance　equation　analysis　was　implemented　in　EnergyPlus　software　to　numerically　model　the　thermal　performance　of　a　passive　solar　greenhouse,　located　in　the　Beijing　Region.　Comparison　of　numerical　and　experimental　data　indicated　a　high　prediction　accuracy　of　the　numerical　model,　which　then　was　used　to　conduct　a　parametric　analysis　of　the　effect　of　main　physical　dimensions　on　the　energy　performance　of　such　greenhouses.　As　a　result,　a　range　of　rational　values　of　physical　dimensions　was　proposed　for　this　type　of　greenhouses.　The　originality　of　the　research　approach　is　using　parametric　analysis　data,　obtained　from　the　calibrated　numerical　model　of　greenhouses,　to　derive　novel　analytical　correlations　for　rapid　calculation　of　the　main　physical　dimensions　of　passive　solar　greenhouses.　The　correctness　of　the　proposed　novel　analytical　method　for　calculation　of　main　physical　dimensions　of　passive　solar　greenhouses　was　experimentally　confirmed　in　a　series　of　comparative　physical　tests　on　various　greenhouse　models.　The　advantage　of　the　proposed　analytical　correlations　is　that　these　are　valid　for　a　wide　range　of　geographical　latitudes　in　China　and　other　regions,　where　a　similar　type　of　greenhouses　can　be　exploited.