ʻO nā papa pololei onā mika wela ultrasonicua māhele ʻia i Papa 1, Papa 2, a me Papa 3. ʻO ka Papa 1 ka mea i ʻoi loa ka pololei, ʻoiai ʻo ka Papa 3 ka mea haʻahaʻa loa.
Wahi a ke kūlana CJ 128 - 2007 "Heat Meters", ua hoʻoholo ʻia ka pololei o ke ana ʻana o ka mika wela e ka huina helu o nā hewa nui loa o ʻekolu mau ʻano: ka pololei o ka mīkini helu, ka pololei o nā mea ʻike mahana i hui pū ʻia, a me ka pololei o ke mea ʻike kahe. Eia nā ʻano helu kikoʻī:
- Papa 1 mika: E=±(2+4Δt/tmin+0.01qp/q)
- Mika papa 2: E=±(3+4Δt/tmin+0.02qp/q)
- Mika papa 3: E=±(4+4Δt/tmin+0.05qp/q)
I waena o lākou, ʻo Δtmin ka ʻokoʻa wela haʻahaʻa loa (K), ʻo Δt ka ʻokoʻa mahana i loko o ka pae hana (K), ʻo qp ka nui o ke kahe maʻamau (m3/h), a ʻo q ka nui o ke kahe i loko o ka pae hana (m3/h).
Ka manawa hoʻouna: ʻApelila-01-2025